Obtaining phase-optimized states from superpositions of coherent states in phase-sensitive attenuating/amplifying reservoirs

Ferreira, C. J. S.; Valverde, Clodoaldo; Avelar, A. T.; Baseia, B.; Malbouisson, J. M. C.

doi:10.1016/j.aop.2019.03.027

Cited by 2 publications

(3 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…which corresponds to the amplitude-attenuated coherent state |αe −κt/2 ; this means that the coherent state |α , in the presence of a dissipating reservoir at zero-temperature, evolves in time remaining a pure coherent state but with an exponentially damped intensity, the mean number of photons (the energy) given by a † a = |α| 2 e −κt . Exactly the same result is achieved by solving the master equation (5) in the Wigner representation, using the Green's function method [3][4][5].…”

Section: Time Evolution In a Dissipative Environmentmentioning

confidence: 94%

A note on the time evolution of a density operator interpolating between pure and mixed states

Figueiredo

Malbouisson

2020

Eur. Phys. J. B

View full text Add to dashboard Cite

In a recent paper [C.J.S. Ferreira, T.M. Silva, B. Baseia, Eur. Phys. J. B 92, 257 ( 2019)], the authors discuss the time evolution of statistical properties of a density operator that interpolates between pure and mixed states, assuming that the time evolution of the system is carried out by a specific time dependence of the coefficients that weight the admixing of the states. Here, we show that this assumption does not correspond exactly to any physical time evolution of the initial state of the system, being only a specific approximation. We present the exact evolution of the system in contact with a dissipative reservoir at zero temperature and discuss the time evolution of interpolations of pure and mixed states.

show abstract

Section: Time Evolution In a Dissipative Environmentmentioning

confidence: 94%

A note on the time evolution of a density operator interpolating between pure and mixed states

Figueiredo

Malbouisson

2020

Eur. Phys. J. B

View full text Add to dashboard Cite

show abstract

“…[75,76] Recently, the generation of a superposition of CSs, which can approximately be regarded as the ideal phase states, has been examined in high-Q microwave cavity. [77] To discuss the phase properties of a given state of a singlemode quantized field, both Susskind-Glogower and Pegg-Barnett constructions may be applied. Based on the latter, [78] observables are described in an (s + 1)-dimensional Hilbert space and as a result, the complete set of (s + 1) orthonormal phase states is defined by wherêdetermines the density operator of the field.…”

Section: Phase Entropic Squeezingmentioning

confidence: 99%

“…[ 75,76 ] Recently, the generation of a superposition of CSs, which can approximately be regarded as the ideal phase states, has been examined in high‐Q microwave cavity. [ 77 ]…”

Section: Conditions For Nonclassicalitymentioning

confidence: 99%

Generalized Photon Added and Subtracted f‐Deformed Displaced Fock States

Faghihi

2020

Annalen der Physik

View full text Add to dashboard Cite

In this paper, by making use of the nonlinear coherent states approach, the generalized photon added and subtracted f-deformed displaced Fock states are introduced. In other words, a natural link between photon added and subtracted displaced Fock states and nonlinear coherent states associated with nonlinear oscillator algebra is obtained. It is found that various kinds of nonclassical states can be generated by adopting appropriately controlling parameters in both linear and nonlinear regimes. Moreover, examining some of the most nonclassical properties such as Mandel's Q parameter, different types of squeezing, namely, quadrature, amplitude-squared and phase entropic squeezing, and Vogel's characteristic function, the nonclassicality features of the considered quantum states of interest are studied. Furthermore, to obtain the degree of quantum coherence, the relative entropy of coherence is investigated. Indeed, the nonclassicality aspects of the states obtained have been numerically studied to understand the roles of deformation functions, photons added and subtracted, and photon number occupied in the Fock state on physical properties. It is demonstrated that the depth and the domain of the nonclassicality features of the system can properly be controlled by selecting the suitable parameters.

show abstract

Obtaining phase-optimized states from superpositions of coherent states in phase-sensitive attenuating/amplifying reservoirs

Cited by 2 publications

References 67 publications

A note on the time evolution of a density operator interpolating between pure and mixed states

A note on the time evolution of a density operator interpolating between pure and mixed states

Generalized Photon Added and Subtracted f‐Deformed Displaced Fock States

Contact Info

Product

Resources

About