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UNFCCC CoP at Cancun and Durban (CoP16 and Cop17)

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unfccc cop16 cancun

Cancun Summit in Mexico and Durban Summit were very important and notable Conference of Parties (CoP) in climate change negotiations. The world that we see today and will find in future is all about the decisions taken by responsible nations at Kyoto, Bali, Copenhagen, Cancun, Mexico and finally at Paris (so far). Let’s have a look on CoP16 and 17.

Cancun Summit – COP16 

The Cancun agreements incorporated decision under both the convention and Kyoto Protocol negotiating tracks. Under these agreements, all parties (both the developing and the developed ones) had agreed to report their voluntary reduction goals for implementation.

FYI, Cancun is a Mexican city on the Yucatan Peninsula bordering the Caribbean Sea.

At Cancun it was decided to set up a Green Climate Fund, a Technology Mechanism and an Adaptation Committee at actions for adaptation and reduction. Those were the significant decisions because they reflected the political understanding attained by a selected group of countries in the form of the Copenhagen accord in December 2009.

Don’t Miss: Bali and Copenhagen Summits of UNFCCC (CoP 13 and 15)

Cancun Agreements-Cop16

Under the multilateral process, In industrialized countries targets were officially recognised and these countries were to develop low-carbon development plans and strategies and assess how best to benefit them.

– Under the multilateral process developing countries actions to reduce emissions were also officially recognised. A registry was to be formed to record and match developing support from developed nations. It was binding on the developing countries to publish progress reports every two years.

– Governments agreed to enhance to check emission from deforestation and forest degradation in developing countries with technological and financial help.

– Partieshad establisheda technology mechanism with a Technology Executive Committee and climate technology centre and Network to enhance technology cooperation to assist action on adaptation and reduction.

Mechnism of COP16

There  were three mechanism which were the outcome of COP16 :

  1. Technology Mechanism.
  2. Green climate Fund
  3. Adaptation Committee

Must Read: Kyoto Protocol – Detailed Analysis

Technology Mechanism

Under the guidance of and accountable to the conference of the parties (COP) , A Technology Mechanism was formed by the 16th session of the COP in Cancun 2010. It was expected to forward the implementation of enhanced action on technology development and transfer to assist action on reduction and adoption to climate change.

Green Climate Fund

Parties, at COp16, set up a green climate fund (GCP) as an operating entity of the financial mechanism of the convention under Article 11.

– It was formed to assist projects, programmes, policies and other activities in developing countries. The fund was governed by GCF board.

– A trustee was appointed to administer the assets of the GCF only for the purpose of, and in accordance with, the relevant decisions of the board.

– The COP invited the World Bank to act as the interim trustee of the GCF, subject to a review three years after operationalization of the fund.

– It was also decided by the COP that an independent secretariat would assist the operations of the fund. It was also decided by the COP that the GCF was to be designed by Transitional Committee (TC)

UPDATE

Parties at COP17, Durban, approved the governing instrument for the GCP, about which the agreements between the COP and the Fund were to finalise at COP 18 in order to ensure that it was accountable to and functioned the guidance of the COP.

– The COP would often guidance to the board on matter related to policies, programme priorities and eligibility criteria and matters related there to. The board would summit annual reports to the COP on its activities.

Also Read: Analysis of 13th EU-India Summit

Adaptation Fund

This fund is financed from the portion on proceeds on the clean development mechanism project activities and other sources of funding. The portion of proceeds amounts to 2% of CERs issued for a CDM project activity.

– It was supervised and managed by the adaptation Fund board that existed of 16 members and 16 alternates and met at least twice a year. – The Global Environmental Facility (GEF), upon the invitation from parties, furnished secretariat services to the AFB.

Adaptation Committee

The Adaptation committee was set up as a part of the Cancun Adaptation Framework by the parties to promote the implementation of advance action on adaptation in a coherent way under the convention through the following functions:

– Providing guidance and technical assistance to the parties.

– Sharing of experience, information, knowledge and good practices.

– Promoting synergy and strengthening engagement with regional ,national and international organisations, centres and networks.

-Considering information communicated by the parties on their monitoring and reviews of adaptation actions, assistance provided and received.

Also Read: Nuclear Security Summit (NSS)

Durban Summit – COP17 

– Firm India forced climate breakthrough at Durban.

– Principle of Equity must in future talks.

New Global Climate Change Regime

– India had gone to Durban with two very important demands- in any new climate change regime the principle of equity must remain intact and this global deal be launched after 2020.

Outcome

  • New deal was to be finalised by 2015 and launched by 2020.
  • Second phase KP was secured
  • Green climate fund was launched, though empty as yet green tech development mechanism was put in place.
  • Equity found its place back in future climate talks.
  • Adaptation Mechanism
  • Transparency mechanism

Geopolitical Fallout

– India regained leadership of the developing worlds. European Uunion gained left at cost of US but also generated board relations with developing countries. Small island states lost respect by becoming EU front.

– BASIC grouping looked more fragmented than before with India and China remaining close but Brazil and South Africa drifting.

India’s Gains and losses

– Won on all its major non-negotiable common but differentiated responsibility principle retained.

– Secured 10 years of economic growth without carbon containment, Intellectual Property Rights and technology not as well anchored in new deal.

– For developed world, loopholes were not fully blocked.

– Agriculture was brought in by developed nation under climate change

Also Read: Climate Change, Technology and Energy Sustainability

Quantum Control and Feedback: Steering Quantum Systems with Precision

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quantum control and feedback

Table of Contents

  1. Introduction
  2. Fundamentals of Quantum Control
  3. Open vs Closed-Loop Control
  4. Coherent and Measurement-Based Control
  5. Quantum Feedback: Motivation and Applications
  6. Quantum Measurement Backaction
  7. Quantum Trajectories and Stochastic Dynamics
  8. Adaptive Quantum Control
  9. Optimal Control Theory in Quantum Systems
  10. GRAPE and CRAB Algorithms
  11. Lyapunov and Bang-Bang Control
  12. Quantum Error Suppression Techniques
  13. Measurement-Based Feedback Control
  14. Coherent Feedback Control
  15. Applications in Quantum Computing
  16. Control of Qubits and Quantum Gates
  17. Stabilization of Quantum States
  18. Experimental Implementations
  19. Challenges and Future Directions
  20. Conclusion

1. Introduction

Quantum control refers to the methods and techniques used to steer the evolution of quantum systems in a precise and desirable way. It plays a crucial role in quantum computing, quantum sensing, and quantum communication by ensuring that systems behave reliably despite noise and imperfections.

2. Fundamentals of Quantum Control

The time evolution of a closed quantum system is governed by the Schrödinger equation:
\[
i\hbar rac{d}{dt}|\psi(t)
angle = H(t)|\psi(t)
angle
\]
where the Hamiltonian \( H(t) \) includes both the system’s natural dynamics and external control fields.

3. Open vs Closed-Loop Control

  • Open-loop control: control pulses are pre-computed and applied without feedback
  • Closed-loop control: system is monitored and control inputs are updated based on measurement outcomes

4. Coherent and Measurement-Based Control

  • Coherent control: applies unitary operations using electromagnetic fields or laser pulses
  • Measurement-based control: uses continuous or discrete measurements to influence system dynamics

5. Quantum Feedback: Motivation and Applications

Quantum feedback is essential for:

  • Stabilizing quantum states
  • Suppressing decoherence
  • Enhancing fidelity of gates
  • Implementing quantum error correction

6. Quantum Measurement Backaction

Unlike classical measurements, quantum measurements disturb the system. Feedback protocols must account for this backaction, typically modeled using quantum trajectory theory.

7. Quantum Trajectories and Stochastic Dynamics

In measurement-based feedback, the system undergoes a stochastic evolution:
\[
d
ho = - rac{i}{\hbar}[H,
ho] dt + \sum_k \mathcal{D}[L_k]
ho\, dt + ext{measurement terms}
\]
Here, \( \mathcal{D}[L]
ho = L
ho L^\dagger – rac{1}{2}{L^\dagger L,
ho} \) represents dissipation.

8. Adaptive Quantum Control

Control strategy evolves during the process, adapting to new information. Examples:

  • Adaptive phase estimation
  • Adaptive qubit calibration
  • Quantum learning agents

9. Optimal Control Theory in Quantum Systems

The goal is to find a control function \( u(t) \) that maximizes fidelity or minimizes cost:
\[
J[u(t)] = \langle\psi(T)|\mathcal{O}|\psi(T)
angle
\]
Techniques include variational calculus and gradient ascent.

10. GRAPE and CRAB Algorithms

  • GRAPE: Gradient Ascent Pulse Engineering, uses fidelity gradient
  • CRAB: Chopped Random Basis algorithm, uses randomized basis to explore control landscape
    Used to design high-fidelity pulses for quantum gates and state preparation.

11. Lyapunov and Bang-Bang Control

  • Lyapunov control: stabilizes a target state using feedback based on a Lyapunov function
  • Bang-Bang control: switches rapidly between two or more control settings, useful in dynamical decoupling

12. Quantum Error Suppression Techniques

  • Dynamical decoupling
  • Decoherence-free subspaces
  • Continuous error correction via weak measurements and feedback

13. Measurement-Based Feedback Control

System is measured and the control is updated in real time. Implemented using:

  • Real-time digital signal processors
  • FPGA controllers
    Used in superconducting qubits, trapped ions, and atomic ensembles.

14. Coherent Feedback Control

Avoids measurement-induced backaction by using ancillary quantum systems to perform indirect control through coherent interactions.

15. Applications in Quantum Computing

Quantum control ensures:

  • Accurate qubit operations
  • Robust quantum gates
  • Initialization and state reset protocols

16. Control of Qubits and Quantum Gates

Qubit manipulation involves:

  • Rabi oscillations
  • Microwave or laser pulses
  • Phase, amplitude, and frequency modulation
    Gate fidelities >99.9% are now achievable with precise control.

17. Stabilization of Quantum States

Quantum feedback can lock a system into a desired state, e.g.:

  • Ground state cooling
  • Photon number stabilization
  • Autonomous error correction codes

18. Experimental Implementations

Implemented on platforms like:

  • Superconducting circuits
  • Trapped ions
  • Cavity and circuit QED
  • Neutral atoms and NV centers

19. Challenges and Future Directions

  • Coping with delays in feedback loops
  • Quantum-limited measurement precision
  • Integration with quantum hardware
  • Scalability to many-qubit systems

20. Conclusion

Quantum control and feedback are essential to realizing the full potential of quantum technologies. As systems grow more complex, advances in optimal control, machine learning, and real-time feedback will be key to unlocking reliable quantum devices and networks.

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Aadhaar Bill: Passage and its Characteristics

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aadhaar bill

On 16, March Lok Sabha, while rejecting the five amendments suggested by the opposition members of the Rajya Sabha, passed the Aadhaar (Targeted Delivery of Financial and other subsidies, Benefits and Services) bill, 2016 through a voice vote in its original form.

Since the Government had introduced the Bill as a money Bill, it could not be rejected or amended by the Rajya Sabha. Although the Upper House, the Rajya Sabha, can only recommend for amendments, the Lok Sabha has got the power to decide not to return money Bill within 14 days after receiving it from Lok Sabha, family which the bill is considered passed by the Upper House (Article 109 of the Constitution of India).

Jairam Ramesh, the Congress MP in Rajya Sabha and the author of all amendments passed by the Rajya Sabha had, in fact, proposed nine amendments got 76 votes in support and 64 against; two more received 77 votes in support and 64 against; whereas one remaining amendment got 76 votes in favour and 65 against.

The amendments suggested a provision to permit a person to “opt out” of the Aadhaar system even if she or he is already enrolled; and another provision to ensure that if a person decides not to be part of the Aadhar system, she/he will be catered “alternate and viable” means of identification for purposes of Government subsidy, benefit or service.

Must Read:  Aadhar Bill Presented in the Lok Sabha

Another amendment demanded to restrict the use of Aadhaar numbers only for targeting of Government benefits or services and not for any other purpose.

Another of the amendments solicited to change the phrase “national security” to “public emergency or in the interest of public safety” in the provision defining situations in which disclosure of identity information of an individual to certain law enforcement agencies can be permitted. According to the author of the suggested amendments the tern “national security” was a “loose” term likely to be misused while interpreting it.

Main Features of the Bill

The Bill has incorporated, in the context of Data Security, the provision to guarantee the security, confidentiality of sensitive information.

The Bill upholds privacy rights, in the context of individual right, of citizens as data access shall be limited to high level functionaries and makes data sharing rule based.

The Bill provides for efficient targeting of beneficiaries, eliminating intermediaries and other costs capacitates prudent spending, fiscal savings.

The Bill advocates high transparcy, prompt service delivery system.

Also Read: Smart Cities Mission and its Objectives 

Eligibility for getting an Aadhaar number

Every Indian resident is able to acquire an Aadhaar number. Under the Bill a ‘resident’ is defined as a person who has resided in India continuously for 182 days, in the one year preceding the data of application for enrolment for Aadhaar.

Information to be submitted

To get an Aadhaar number an individual has to submit her/his (i) biometric (photograph, finger print, iris scan) and (ii) demographic (name, date of birth, address) information. The Unique Identification Authority (UID) may specify other biometric and demographic information.

Use of Aadhaar Number

In order to verify the identity of a person seeking a subsidy or a service, the government requires him or her to have an Aadhaar number. If the person does not possess an Aadhaar number, he or she would be directed by the Government to apply for the same, and in the meantime, the Government has to provide an alternative means of identification to such person. Any public or private entity can accept the number the Number as a proof of identity of the holder of the Number, for any purpose. But Aadhar number cannot be a proof of citizenship or domicile.

Don’t Miss: 12th Five Year Plan and History of Planning in India

The President’s Power to Pass Ordinance

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ordinance

On Monday, ending confusion among aspirants and their guardians as well, the President Parnab Mukherjee signed the ordinance that was given green signal by the Parliament on May 20. The ordinance in question was brought to ‘partially’ overrun a Supreme Court ruling that said all Government colleges, deemed universities and private medical colleges would be covered under NEET (National Eligibility Cum Entrance Test).

According to this executive order, the students belonging to State Governments boards will not have to sit for NEET on July 24, 2016. However, they are going to be part of this uniform entrance exam from the next academic session.

Prior to the nod of the President, the confusion over the fate of this particular executive order ordinance got into confusion as a news got circulated in the mainstream electronic media that the President had sought the suggestion of the Attorney General on the executive order; it resulted in the understanding that now the issue of NEET would take more time as Attorney general being on leave and the President had to go China on an official visit.

All these events led to a central theme: the theme of issuance of ordinances and its validity in the context of India democracy.

Must Read: Powers of The President of India

Defining Ordinance

Giving definition of an Ordinance, A Dictionary of Law by William C Anderson says, ‘Ordinance, is a State paper, operative as a fundamental law, yet not described as either a Constitution or a Statute.’

Simply put, Ordinances are executive orders, signed by the President of India, that command the same force and effect an Act passed by the Parliament does have.

Article 123 of the Constitution of India grants the power to issue ordinances to the President of India.

However, the reality behind issuing and passage of  ordinances is that it is the Union Cabinet that, finally, gives green signal for issuing ordinances to the President who has to merely give his assent.

Read Also: National Eligibility-cum-Entrance Test Order : A Dilemma  

On the Need for Ordinance

An ordinance, ordinarily considered as a last recourse and not an instrument to sideline the power or functioning of Parliament, can be issued only when both houses of Parliament Lok Sabha and Rajya Sabha are not in session.

It has been presumed that generally ordinances should be issued only on issues which need immediate consideration and cannot wait for Parliament to assemble and consider the bill.

However, when we shift from theory to practical in the context of making of an ordinance we are made to comprehend that, in reality, many times ordinances are issued by Governments due to the lack of consensus, on the issue in focus, in the Parliament.

The most practical side of issuing an ordinance is that if there remains a possibility of a bill of being rejected in an ongoing session of Parliament, the Government can take the route of issuing an ordinance pending its approval by the Parliament during a later session.

It is important to mention here that if one goes through the history of passage of ordinances in India one will find that on an average, 10.3 ordinances have been issued every year even though these are to used as an emergency provision only.

Dealing with the promulgation of an Ordinance sub-clause (a) of clause 2 of the Article 123 of the Constitution of India says: An Ordinance promulgated under this article shall have the same force and effect as an Act of Parliament, but every such Ordinance “shall be laid before both Houses of Parliament and shall cease to operate at the expiration of six weeks from the reassembly of Parliament, or, if before the expiration of that period resolutions disapproving it are passed by both Houses, upon the passing of the second of those resolutions”.

Sub-clause (6) of clause 2 of the Article 123, however says that an ordinance ‘may be withdrawn at any time by the President’.

During the Validity period, that is of six weeks, of an ordinance, Parliament can either pass the ordinance transforming it into an Act of disapprove the ordinance. If the Parliament fails to pass it, the ordinance can be re-issued by the Government (Constitutionally the President).

The Constitution of India does not put any time limit as there is no limit how many times ordinances can be re-issued. However, the Supreme Court, in the context of the re-issuance of the ordinances, has ruled that an ordinance cannot be re-issued endlessly without getting it to vote in the legislature.

Also Read: Government to Appoint New Governor of Reserve Bank of India (RBI)

Today in History – 7 March

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today in history 7 March

today in history 7 March

1911

Sachchitanand Hiranand Vatsyayan, (Agyeya), modern Hindi literary journalist, freedom fighter and the winner of Jnanpith Award of 1979, was born.

1952

Parmahansa Yogananda, great saint, social reformer and writer, died at Los Angles.

1956

A gigantic steel tube plant opened in Jamshedpur. It was the first of its kind in India.

1961

Govind Ballabh Pant passed away. He had served eight years as the Chief Minister of Uttar Pradesh. He was bestowed with Bharat Ratna in 1959.

1987

Sunil Gavaskar becomes the first batsman to score 10,000 test runs in cricket a match against Pakistan at Ahmedabad.

1994

India and Iran sign three MoU in Tehran.

1996

Union Cabinet clears decks for extending benefits of reservation to Dalit Christians.

1998

A. B. Vajpayee was elected leader of the BJP Parliamentary Party.