Nonclassicality and entanglement properties of non-Gaussian entangled states via a superposition of number-conserving operations

Ye, Wei; Guo, Ying; Zhang, Huan; Zhong, Hai; Xia, Ying; Chang, Shoukang; Hu, Li-Yun

doi:10.1007/s11128-020-02752-z

Cited by 7 publications

(3 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Here we only consider coherent state and superposition of coherent states as inputs to realize the preparation of entangled resource for realizing quantum teleportation of coherent state, and the ideal quantum teleportation scheme (Braunstein and Kimble (KB) scheme) [34]. It is interesting that, in this scheme, when the coherent state is teleported the teleportation fidelity is independent of the coherent amplitude [35]. Therefore, for the convenience of discussion, we only examine the teleportation of the vacuum state.…”

Section: Application Of the Bs In Quantum Teleportationmentioning

confidence: 99%

See 1 more Smart Citation

Representation of the coherent state for a beam splitter operator and its applications

Zhan¹,

Jia²,

Huang³

et al. 2022

Commun. Theor. Phys.

Self Cite

View full text Add to dashboard Cite

Beam splitter operator is a very important linear device in the field of quantum optics and quantum information. It can not only be used to prepare complete representations of quantum mechanics, entangled state representation, but also be used to simulate the dissipative environment of quantum systems. In this paper, by combining the transform relation of beam splitter operator and the tech- nique of integration within product of operator, we present the coherent state representation of the operator and the corresponding normal ordering form. Based on this, we consider the applications of the coherent state representation of beam splitter operator, such as deriving some operator identities and entangled state representation preparation with continuous-discrete variables. Furthermore, we extend our investigation to two single and two-mode cascaded beam splitter operators, giving the corresponding coherent state representation and its normal ordering form. In addition, the application of a beam splitter to prepare entangled states in quantum teleportation is further investigated, and the fidelity is discussed. The above results provide good theoretical value in the fields of quantum optics and quantum information.

show abstract

Section: Application Of the Bs In Quantum Teleportationmentioning

confidence: 99%

“…35) is the representation of the whole operator of the two single-mode-shared cascaded BSs (figure1) in the coherent state representation.Using the IWOP technique, integrating equation(35), the normal ordering form of the whole operator can be obtained…”

mentioning

confidence: 99%

Representation of the coherent state for a beam splitter operator and its applications

Zhan¹,

Jia²,

Huang³

et al. 2022

Commun. Theor. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…into single-and two-mode coherent, thermal and squeezed input states [51]. After that, the nonclassicality of the GSP-based two-mode squeezed coherent state was suggested, and it was found that the nonclassicality of such a state can increase with the increase of the number of the GSP operations [52]. To our knowledge, the investigation of the GSP from the STS has not been previously addressed.…”

Section: Introductionmentioning

confidence: 99%

Generation of nonclassical states by superposition of number-conserving operations on squeezed thermal state

Ye¹,

Guo²,

Zhang³

et al. 2021

Phys. Scr.

Self Cite

View full text Add to dashboard Cite

The nonclassicality is the prerequisite for quantum states to be applied into quantum information, especially for quantum metrology. Here we theoretically investigate the non-classical properties of the non-Gaussian state generated by repeatedly operating a number-conserving generalized superposition of products (GSP), i.e., (s 1 aa † + t 1 a † a)m with s 1 2 + t 1 2 = 1 , on the squeezed thermal state (STS), in terms of second-order correlation function, Mandel’s Q parameter, quadrature squeezing and Wigner function (WF). It is shown that, compared to the cases of the STS, the GSP-STS with the high-order GSP operations (m > 1) at the small-squeezing levels can be beneficial to the existence of the photon-antibunching effect, the sub-Poissonian distribution and the partial negativity of the WF, apart from the quadrature squeezing. In addition, for the case of m = 1, we also compare with the non-classical properties of several different non-Gaussian resources, involving the photon-subtracted-then-added (PSTA) STS, the GSP-STS and the photon-added-then-subtracted (PATS) STS. It is found that the PSTA-STS with respect to the sub-Poissonian distribution and the partial negativity of the WF has a better performance than others. Significantly, the generated GSP-STS has an obvious advantage of showing the photon-antibunching effects, compared to the PSTA-STS and the PATS-STS, which means that our scheme may have an excellent guidance for the practical implementations in quantum information.

show abstract

Coherent superposition of photon subtraction- and addition-based two-mode squeezed coherent state: quantum properties and its applications

Guo

Zhang

et al. 2023

Quantum Inf Process

View full text Add to dashboard Cite

Nonclassicality and entanglement properties of non-Gaussian entangled states via a superposition of number-conserving operations

Cited by 7 publications

References 46 publications

Representation of the coherent state for a beam splitter operator and its applications

Representation of the coherent state for a beam splitter operator and its applications

Generation of nonclassical states by superposition of number-conserving operations on squeezed thermal state

Coherent superposition of photon subtraction- and addition-based two-mode squeezed coherent state: quantum properties and its applications

Contact Info

Product

Resources

About