Quantum electrodynamics and photon-assisted tunneling in long Josephson junctions

نویسندگان

  • A. O. Sboychakov
  • Sergey Savel’ev
  • Franco Nori
چکیده

A. O. Sboychakov,1,2 Sergey Savel’ev,1,3 and Franco Nori1,4 1Advanced Science Institute, The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama 351-0198, Japan 2Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, 125412 Moscow, Russia 3Department of Physics, Loughborough University, Loughborough LE11 3TU, United Kingdom 4Department of Physics, Center for Theoretical Physics, Applied Physics Program, Center for the Study of Complex Systems, The University of Michigan, Ann Arbor, Michigan 48109-1040, USA Received 14 April 2008; revised manuscript received 5 August 2008; published 15 October 2008

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Quantum terahertz electrodynamics and macroscopic quantum tunneling in layered superconductors.

We derive a quantum field theory of Josephson plasma waves (JPWs) in layered superconductors, which describes two types of interacting JPW bosonic quanta (one heavy and one lighter). We propose a mechanism of enhancement of macroscopic quantum tunneling (MQT) in stacks of intrinsic Josephson junctions. Because of the long-range interaction between junctions in layered superconductors, the calcu...

متن کامل

6 O ct 1 99 9 Microwave spectroscopy on a double quantum dot with a near - field Josephson oscillator

We present measurements on microwave spectroscopy on a double quantum dot with a near-field microwave source. The quantum dots are realized in the two-dimensional electron gas of an AlGaAs/GaAs heterostructure and are weakly coupled in series by a tunneling barrier forming an 'ionic' molecular state. As a microwave source we employ a Josephson oscillator formed by a long Nb/Al-AlO x /Nb junctio...

متن کامل

Microwave spectroscopy on a double quantum dot with an on-chip Josephson oscillator

We present measurements on microwave spectroscopy on a double quantum dot with an on-chip microwave source. The quantum dots are realized in the two-dimensional electron gas of an AlGaAs/GaAs heterostructure and are weakly coupled in series by a tunneling barrier forming an ’ionic’ molecular state. As a microwave source we employ a Josephson oscillator formed by a long Nb/Al-AlOx/Nb junction. W...

متن کامل

Macroscopic Quantum Tunneling and Resonant Activation of Current Biased Intrinsic Josephson Junctions in Bi-2212

The utilization of a high-Tc superconductor for implementing a superconducting qubit is to be expected. Recent researches on the quantum property of Josephson junctions in high-Tc superconductors indicate that the low energy quasiparticle excitation is weak enough to observe the macroscopic quantum tunneling. Therefore, a detailed study on the quantum property of high-Tc Josephson junctions bec...

متن کامل

Photon-number squeezing in circuit quantum electrodynamics.

A superconducting single-electron transistor (SSET) coupled to an anharmonic oscillator, e.g., a Josephson junction-L-C circuit, can drive the latter to a nonequilibrium photon-number distribution. By biasing the SSET at the Josephson quasiparticle cycle, cooling of the oscillator as well as a laserlike enhancement of the photon number can be achieved. Here, we show that the cutoff in the quasi...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008