Thermal state truncation by using quantum-scissors device

Zhao, Hong-xia; Xu, Xue-Xiang; Yuan, Hao

doi:10.1016/j.optcom.2016.07.078

Cited by 14 publications

(3 citation statements)

References 33 publications

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“…[28,29] To extend the above-mentioned works, thermal state truncation was proposed via QSD to generate a mixture of vacuum and single-photon states. [30] By applying QSDs to both modes of the two-mode squeezed vacuum state (TMSVS), the resulting state was the entangled state composed of the twin vacuum and the twin single-photon, which can realize the enhance of entanglement and the improvement of the fidelity of teleportation. [31] Zhang et al presented a slight modification to propose a catalytic QSD [32] and a displacement-based QSD [33] to truncate the input coherent state, indicating that the output state is a highly nonclassical quantum state.…”

Section: Introductionmentioning

confidence: 99%

Quantum properties of nonclassical states generated by an optomechanical system with catalytic quantum scissors

Li¹,

Yang²,

Yuan³

et al. 2023

Chinese Phys. B

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A scheme is proposed to investigate the non-classical states generated by quantum scissors device (QSD) operating on the the cavity mode of optomechanical system. When the catalytic QSD acting on the cavity mode of optomechanical system, the resulting state contains only the vacuum, single-photon and two-photon states depending upon the coupling parameter of optomechanical system as well as the transmission coefficients of beam splitters. Especially, the output state is just a class of multicomponent cat state truncations at time t = 2π by choosing the appropriate value of coupling parameter. We have discussed the success probability of such state and the fidelity between the output state and input state via QSD. Then the linear entropy is used to investigate the entanglement between the two subsystems, which finds that QSD operation can enhance their entanglement degree. Further-more, we also derive the analytical expression of Wigner function (WF) for the cavity mode via QSD and numerically discuss the WF distribution in phase space at time t = 2π. These results show that the high non-classicality of output state can always be achieved by modulating the coupling parameter of optomechanical system as well as the transmittance of beam splitters.

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Section: Introductionmentioning

confidence: 99%

Quantum properties of nonclassical states generated by an optomechanical system with catalytic quantum scissors

Li¹,

Yang²,

Yuan³

et al. 2023

Chinese Phys. B

Self Cite

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“…[28,29] It has been shown that QSD can be used as a nondeterministic optical noiseless amplifier. [30,31] Since the QSD has a lot of potential applications, [32,33] it is worthwhile to further study the statistics of states generated by a QSD. In this paper, we view the QSD as a black box and feed several different input states, e.g., Fock states, coherent states, and thermal states.…”

Section: Introductionmentioning

confidence: 99%

Statistics of states generated by quantum-scissors device

Wang¹,

Yan²

2019

Chinese Phys. B

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Generating desired states is a prerequisite in quantum information. Some desired states can be generated by a quantum-scissors device (QSD). We present a detailed analysis of the properties of the generated states, including average photon numbers and intensity gains. The theoretical analysis shows that there is a nondeterministic amplification in terms of the average photon number under the condition that the average photon number of the input state is less than 1. In contrast to the input states, the generated states show the nonclassical property described by the negativity of the Wigner function. Furthermore, we generalize the QSD to truncate arbitrary photon number terms of the input states, which may be useful in high-dimensional quantum information processing.

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“…O trabalho de quantum scissors original explorava apenas o truncamento de estados coerentes na componente de 1 fóton [4]. Porém, estudos mais recentes generalizaram o método para o truncamento de estados térmicos [38], para o truncamento em componentes de número de fótons de maior ordem (o que requer mais estado de Fock) [39] e para o efeito de fotodetecções não ideais no processo [19].…”

Section: Introductionunclassified

Manipulação de estados do campo quantizado utilizando meios lineares e não-lineares

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Este trabalho teve como objetivo desenvolver novos métodos para geração de estados não-clássicos do campo eletromagnético, utilizando meios lineares (divisor de feixes) e não-lineares (amplificador paramétrico). Em particular, estudamos o método conhecido como quantum scissors para gerar estados truncados da luz e desenvolvemos um método alternativo que, além de apresentar maior flexibilidade com relação ao tipo de estados gerados, permite uma simplificação do aparato experimental. Para ilustrar o método, calculamos as propriedades dos estados gerados utilizando como entrada estados coerentes e estados térmicos. Em seguida estudamos o efeito de fotodetectores imperfeitos no processo e o efeito da adição de fótons sobre os estados gerados previamente. Por fim, desenvolvemos, a partir do aparato de quantum scissors, um novo esquema de hole-burning e ilustramos esse método utilizando como entrada estados de vácuo comprimido, estados coerentes comprimidos e estados coerentes com fóton adicionado.

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Thermal state truncation by using quantum-scissors device

Cited by 14 publications

References 33 publications

Quantum properties of nonclassical states generated by an optomechanical system with catalytic quantum scissors

Quantum properties of nonclassical states generated by an optomechanical system with catalytic quantum scissors

Statistics of states generated by quantum-scissors device

Manipulação de estados do campo quantizado utilizando meios lineares e não-lineares

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