Deterministic noiseless amplification of coherent states
نویسندگان
چکیده
منابع مشابه
Noiseless Optical Amplification of Images
We used a spatially broadband optical parametric amplifier for image amplification. In the phasesensitive configuration of the amplifier, we observed noiseless amplification of input images. For a gain of 2.5, we measured noise-figure values of (0.2 6 0.6) and (0.4 6 0.5) dB, respectively, for two amplifiers of different lengths. These experimental values agree with theory (for an ideal noisele...
متن کاملAn Entanglement Study of Superposition of Qutrit Spin-Coherent States
Considering generalized concurrence as the criterion of entanglement, we study entanglement properties of superposition of two qutrit coherent states, as a function of their amplitudes. These states may attain maximum entanglement or no entanglement at all, depending on the choice of the parameters involved. The states revealing maximum entanglement also display the maximum violations of the Be...
متن کاملErratum: Noiseless intensity amplification of repetitive signals by coherent addition using the temporal Talbot effect
Amplification of signal intensity is essential for initiating physical processes, diagnostics, sensing, communications and measurement. During traditional amplification, the signal is amplified by multiplying the signal carriers through an active gain process, requiring the use of an external power source. In addition, the signal is degraded by noise and distortions that typically accompany act...
متن کاملDeterministic amplification of Schrödinger cat states in circuit quantum electrodynamics
Jaewoo Joo, 2 Matthew Elliott, Daniel K. L. Oi, Eran Ginossar, and Timothy P. Spiller Quantum Information Science, School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, U.K. Advanced Technology Institute and Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom SUPA Department of Physics, University of Strathclyde, Glasgow, G4 0NG, United Kingdom York Ce...
متن کاملGazeau- Klouder Coherent states on a sphere
In this paper, we construct the Gazeau-Klauder coherent states of a two- dimensional harmonic oscillator on a sphere based on two equivalent approaches. First, we consider the oscillator on the sphere as a deformed (non-degenerate) one-dimensional oscillator. Second, the oscillator on the sphere is considered as the usual (degenerate) two--dimensional oscillator. Then, by investigating the quan...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review A
سال: 2015
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.92.022352