Ezaki<i>et al.</i>Reply:

Ezaki, Hiromi; Hanamura, Eiichi; Yamamoto, Yoshiharu

doi:10.1103/physrevlett.85.1137

Cited by 22 publications

(27 citation statements)

References 3 publications

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“…(22). Therefore, for an initial coherent state, |z with |z| ∼ 1, the output density matrix of mode b 2 is very close to the phase state |0 + e i arg(z) |1 [15][16][17]. Note that the output mode is still given by b 2 , however now it is localized in the linear mode, b 2 ≈ a 2 − q −1 a 1 .…”

Section: B the Nonclassical States Generation With One Nonlinear Andmentioning

confidence: 89%

“…However, designing similar reservoirs for photons is a much more challenging task, where even the theoretical schemes are mostly lacking. A notable exception is a couple of schemes proposed recently for generating of the phase states (|0 + e iφ |1 )/ √ 2 [15][16][17] and the single-photon states [18]. Alas, they still require the very specific nonlinear dissipation (for example, the third-order nonlinear absorption is needed for the scheme of Ref.…”

Section: Introductionmentioning

confidence: 99%

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Generators of nonclassical states by a combination of linear coupling of boson modes, Kerr nonlinearity, and strong linear losses

Shchesnovich¹,

Mogilevtsev²

2011

Phys. Rev. A

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We show that the generators of quantum states of light can be built by employing the Kerr nonlinearity, a strong linear absorption or losses and the linear coupling of optical modes. Our setup can be realized, for instance, with the use of the optical fiber technology. We consider in detail the simplest cases of three and four coupled modes, where a strongly lossy mode is linearly coupled to other linear and nonlinear modes. In the three-mode design, our scheme emulates the third-order nonlinear absorption, allowing for generation of the single photon states, or the twophoton absorption allowing to generate the phase states. In the four-mode design, the scheme emulates a non-local absorption which produces an entangled state of two uncoupled modes. We also note that in the latter case and in the case of the phase states generation the output state is in the linear modes, which prevents its subsequent degradation by strong losses accompanying a strong Kerr nonlinearity.

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Section: B the Nonclassical States Generation With One Nonlinear Andmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Generators of nonclassical states by a combination of linear coupling of boson modes, Kerr nonlinearity, and strong linear losses

Shchesnovich¹,

Mogilevtsev²

2011

Phys. Rev. A

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“…It was shown that it is possible to produce a wide variety of nonlinear losses for vibrational states of ions in magnetic traps [11,12], or atoms in optical lattices [13]. Using a combination of optical nonlinearities, one can produce nonlinear losses of electromagnetic field modes [14][15][16][17]. Implementing correlated linear loss, one can also produce an effective nonlinear loss in Bose-Einstein condensates [18].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Coherent Loss for Generating Non-classical States

Mikhalychev

Mogilevtsev

Kilin

2012

Research in Optical Sciences

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Here we discuss generation of non-classical states of bosonic mode with the help of artificially designed loss, namely the nonlinear coherent loss. We show how to generate superpositions of Fock states, and how it is possible to "comb" the initial states leaving only states with certain properties in the resulting superposition (for example, a generation of a superposition of Fock states with odd number of particles). We discuss purity of generated states and estimate maximal achievable generation fidelity.

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“…More that a decade ago, it has been shown that in the systems such as ions in magnetic traps it is possible to tailor nonlinear dissipation in a rather wide range [1], and later the concept of the "quantum state protection" was born [2]. Different kinds of a nonlinear dissipative apparatas (aptly nicknamed "dissipative gadgets" [3,4]) have been shown to be useful for many important tasks, for example, for generating non-classical and entangled states of few-body and many-body systems [5][6][7][8][9][10][11][12], performing universal quantum computation [4,13], constructing dissipatively protected quantum memory [14], performing precisely timed sequential operations, conditional measurements or error correction [13]. The central idea of all the dissipative gadgets is to make dissipation to drive the system towards a desired steady state (which is practically independent of the initial state).…”

mentioning

confidence: 99%

Nonlinear dissipation can combat linear loss

et al. 2013

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We demonstrate that it is possible to compensate for effects of strong linear loss when generating non-classical states by engineered nonlinear dissipation. We show that it is always possible to construct such a loss-resistant dissipative gadget in which, for a certain class of initial states, the desired non-classical pure state can be attained within a particular time interval with an arbitrary precision. Further we demonstrate that an arbitrarily large linear loss can still be compensated by a sufficiently strong coherent or even thermal driving, thus attaining a strongly non-classical (in particular, sub-Poissonian) stationary mixed states.Comment: Submitted to PR

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Ezakiet al.Reply:

Cited by 22 publications

References 3 publications

Generators of nonclassical states by a combination of linear coupling of boson modes, Kerr nonlinearity, and strong linear losses

Generators of nonclassical states by a combination of linear coupling of boson modes, Kerr nonlinearity, and strong linear losses

Nonlinear Coherent Loss for Generating Non-classical States

Nonlinear dissipation can combat linear loss

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