"Seeking the Light in a Cavity" in Conversation with Nobel Laureate Serge Haroche

2014 ◽  
Vol 03 (02) ◽  
pp. 12-14
Author(s):  
Michael Good ◽  
Wei Liang Quek
Keyword(s):  
Cavity Qed ◽  
Quantum Physics ◽  
Photon Number ◽  
Nobel Laureate ◽  
Experimental Methods ◽  
Quantum Systems ◽  
Asia Pacific ◽  
Editorial Team ◽  
Collège De France ◽  
Quantum Feedback

Serge Haroche, Chair in Quantum Physics at the College de France. Professor Haroche was awarded the 2012 Nobel Prize for Physics for "groundbreaking experimental methods that enable measuring and manipulation of individual quantum systems". On 22 April 2013, the first day of the Berge Fest Conference, Professor Haroche delivered a talk on "Controlling photons in cavities". He reviewed recent experiments in Cavity QED in which his group count trapped microwave photons non-destructively and used quantum feedback methods to stabilize the photon number to a preset value. Further developments of these experiments were also discussed in his talk. The editorial team of Asia Pacific Physics Newsletter interviewed Professor Haroche during the Berge Fest Conference on 24 April 2014. For more information of the Berge Fest Conference, please visit http://bergefest.quantumlah.org/

Interview with 2012 Nobel Prize Winner Serge Haroche

2013 ◽  
Vol 02 (01) ◽  
pp. 51-53
Keyword(s):  
Nobel Prize ◽  
Quantum Physics ◽  
Annual Report ◽  
Experimental Methods ◽  
Nobel Prize Winner ◽  
Quantum Systems ◽  
Collège De France ◽  
Lecture Series ◽  
National University ◽  
Nobel Prize In Physics

Serge Haroche, Chair in Quantum Physics at the College de France, won a share of the Nobel Prize in Physics 2012. Before the prize was announced, the Centre for Quantum Technologies (CQT) at the National University of Singapore had invited him to contribute to its 2012 annual report. This was after he delivered his prestigious College de France lecture series in Singapore in 2012. The Q&A was published in full on CQT's website and is reproduced here with permission. Serge Haroche was awarded the Nobel Prize in Physics 2012 "for ground-breaking experimental methods that enable measuring and manipulation of individual quantum systems."

Nobel Laureate Roy Glauber on Physics and His Personal Experience

2014 ◽  
Vol 03 (02) ◽  
pp. 10-11
Author(s):  
Michael Good
Keyword(s):  
Personal Experience ◽  
Nobel Laureate ◽  
Asia Pacific ◽  
Editorial Team ◽  
Community Members ◽  
Physics Community ◽  
Personal Experiences ◽  
National University ◽  
Nobel Prize In Physics ◽  
Technological University

Roy Jay Glauber, Lee Kong Chian Distinguished Professor; Mallinckrodt Professor of Physics, Harvard University. Professor Glabuer was awarded the 2005 Nobel Prize in Physics for his contribution to the quantum theory of optical coherence. He was invited to Singapore by Institute of Advanced Studies@ Nanyang Technological University in 2014. During his stay in Singapore, he gave several talks to the local physics community members and the general public. In one of his public lectures on "Some Recollections of Los Alamos — and the Nuclear Era", he shared his personal experiences, feelings, and interpretations, regarding wartime science. The editorial team of Asia Pacific Physics Newsletter interviewed Professor Glauber at the Centre for Quantum Technologies, National University of Singapore on 6 May 2014.

scholarly journals Timelessness Strictly Inside the Quantum Realm

Entropy ◽  
2021 ◽  
Vol 23 (6) ◽  
pp. 772
Author(s):  
Knud Thomsen
Keyword(s):  
Real World ◽  
Quantum Physics ◽  
Quantum Systems ◽  
The Real ◽  
Classical World ◽  
Quantum Objects ◽  
The Everyday ◽  
Double Slit

Time is one of the undisputed foundations of our life in the real world. Here it is argued that inside small isolated quantum systems, time does not pass as we are used to, and it is primarily in this sense that quantum objects enjoy only limited reality. Quantum systems, which we know, are embedded in the everyday classical world. Their preparation as well as their measurement-phases leave durable records and traces in the entropy of the environment. The Landauer Principle then gives a quantitative threshold for irreversibility. With double slit experiments and tunneling as paradigmatic examples, it is proposed that a label of timelessness offers clues for rendering a Copenhagen-type interpretation of quantum physics more “realistic” and acceptable by providing a coarse but viable link from the fundamental quantum realm to the classical world which humans directly experience.

Thermodynamics and Control of Open Quantum Systems

2021 ◽  
Author(s):  
Gershon Kurizki ◽  
Abraham G. Kofman
Keyword(s):  
Quantum Chemistry ◽  
Quantum Physics ◽  
Open Quantum Systems ◽  
Condensed Matter ◽  
Quantum Systems ◽  
Open Quantum ◽  
Heat Engines ◽  
Chemistry Research ◽  
And Control ◽  
Quantum Thermodynamic

The control of open quantum systems and their associated quantum thermodynamic properties is a topic of growing importance in modern quantum physics and quantum chemistry research. This unique and self-contained book presents a unifying perspective of such open quantum systems, first describing the fundamental theory behind these formidably complex systems, before introducing the models and techniques that are employed to control their quantum thermodynamics processes. A detailed discussion of real quantum devices is also covered, including quantum heat engines and quantum refrigerators. The theory of open quantum systems is developed pedagogically, from first principles, and the book is accessible to graduate students and researchers working in atomic physics, quantum information, condensed matter physics, and quantum chemistry.

scholarly journals The creation and detection of arbitrary photon number states using cavity QED

2004 ◽  
Vol 6 ◽  
pp. 97-97 ◽  
Author(s):  
Benjamin T H Varcoe ◽  
Simon Brattke ◽  
Herbert Walther
Keyword(s):  
Cavity Qed ◽  
Photon Number ◽  
The Creation

scholarly journals IBM Q Experience as a versatile experimental testbed for simulating open quantum systems

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Guillermo García-Pérez ◽  
Matteo A. C. Rossi ◽  
Sabrina Maniscalco
Keyword(s):  
Quantum Electrodynamics ◽  
Quantum Physics ◽  
Open Quantum Systems ◽  
Cavity Quantum Electrodynamics ◽  
Quantum Systems ◽  
Entangled State ◽  
Specific Class ◽  
Linear Optics ◽  
Open Quantum ◽  
State Generation

AbstractThe advent of noisy intermediate-scale quantum (NISQ) technology is changing rapidly the landscape and modality of research in quantum physics. NISQ devices, such as the IBM Q Experience, have very recently proven their capability as experimental platforms accessible to everyone around the globe. Until now, IBM Q Experience processors have mostly been used for quantum computation and simulation of closed systems. Here, we show that these devices are also able to implement a great variety of paradigmatic open quantum systems models, hence providing a robust and flexible testbed for open quantum systems theory. During the last decade an increasing number of experiments have successfully tackled the task of simulating open quantum systems in different platforms, from linear optics to trapped ions, from nuclear magnetic resonance (NMR) to cavity quantum electrodynamics. Generally, each individual experiment demonstrates a specific open quantum system model, or at most a specific class. Our main result is to prove the great versatility of the IBM Q Experience processors. Indeed, we experimentally implement one and two-qubit open quantum systems, both unital and non-unital dynamics, Markovian and non-Markovian evolutions. Moreover, we realise proof-of-principle reservoir engineering for entangled state generation, demonstrate collisional models, and verify revivals of quantum channel capacity and extractable work, caused by memory effects. All these results are obtained using IBM Q Experience processors publicly available and remotely accessible online.

DYNAMIC PROPERTIES OF THE LARGE-DETUNING CAVITY QED SYSTEM IN THE PRESENCE OF CAVITY DECAY

2008 ◽  
Vol 22 (26) ◽  
pp. 2561-2570
Author(s):  
CHENG-YUAN GAO ◽  
LEI MA ◽  
JIN-MING LIU
Keyword(s):  
Cavity Qed ◽  
Dynamic Properties ◽  
Photon Number ◽  
Quantum Phase Gate ◽  
Cavity Decay ◽  
Phase Gate ◽  
Physical Quantities ◽  
Population Probability ◽  
Average Photon Number ◽  
Epr State

We consider a physical process of two Λ-type three-level atoms interacting with a bimodal cavity including the influence of the cavity decay. We analyze the influence of cavity decay on several physical quantities of the process, such as atomic population probability, residual entanglement, concurrence of two atoms, average population inversion, average photon number, the fidelity for quantum phase gate, and the fidelity of generating atomic EPR state. It is found that all of these physical quantities decrease with the increase of cavity decay when the other relevant parameters are fixed.

EDITORIAL

2013 ◽  
Vol 02 (01) ◽  
pp. 3-3
Author(s):  
Kok Khoo Phua
Keyword(s):  
Electron Microscopy ◽  
Quantum Physics ◽  
Asia Pacific

This issue of Asia Pacific Physics Newsletter (APPN), is specially dedicated to Professor Akira Tonomura (1942–2012), for his important scientific and technological contributions for four decades on electron microscopy and quantum physics.

scholarly journals A High-Speed Fully Digital Phase-Synchronizer Implemented in a Field Programmable Gate Array Device

2017 ◽  
Vol 24 (3) ◽  
pp. 537-550 ◽  
Author(s):  
Robert Frankowski ◽  
Dariusz Chaberski ◽  
Marcin Kowalski ◽  
Marek Zieliński
Keyword(s):  
Integrated Circuit ◽  
High Speed ◽  
Quantum Physics ◽  
Single Photon ◽  
Photon Number ◽  
Simultaneous Recording ◽  
Wide Frequency Range ◽  
Coincidence Detection ◽  
Clock Period ◽  
Digital Phase

AbstractMost systems used in quantum physics experiments require the efficient and simultaneous recording different multi-photon coincidence detection events. In such experiments, the single-photon gated counting systems can be applicable. The main sources of errors in these systems are both instability of the clock source and their imperfect synchronization with the excitation source. Below, we propose a solution for improvement of the metrological parameters of such measuring systems. Thus, we designed a novel integrated circuit dedicated to registration of signals from a photon number resolving detectors including a phase synchronizer module. This paper presents the architecture of a high-resolution (~60 ps) digital phase synchronizer module cooperating with a multi-channel coincidence counter. The main characteristic feature of the presented system is its ability to fast synchronization (requiring only one clock period) with the measuring process. Therefore, it is designed to work with various excitation sources of a very wide frequency range. Implementation of the phase synchronizer module in an FPGA device enabled to reduce the synchronization error value from 2.857 ns to 214.8 ps.

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