Spatial Domain Interactions between Ultraweak Optical Beams

Khadka, Utsab; Sheng, Jiteng; Xiao, Min

doi:10.1103/physrevlett.111.223601

Cited by 11 publications

(9 citation statements)

References 33 publications

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“…4 and 5 are the images on the output plane of the cell, therefore, they are quite different from the Fraunhofer diffraction from electromagnetically induced grating as proposed in [21], Ling et al Also, in principle, it is possible to observe the discrete diffraction pattern as predicted in Fig. 3(b) from the side view of the cell [27].…”

Section: Experimental Setup and Theorymentioning

confidence: 78%

“…In multi-level atomic systems, many intriguing spatial phenomena have been observed in EIT-related systems. These include electromagnetically induced focusing [19], self-imaging [20], electromagnetically induced gratings [21][22][23][24], and soliton formation [25][26][27]. All these interesting observations result from the spatial variation of the refractive index in an EIT or EIT-related atomic medium.…”

Section: Introductionmentioning

confidence: 99%

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Observation of discrete diffraction patterns in an optically induced lattice

Sheng¹,

Wang²,

Miri³

et al. 2015

Opt. Express

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We have experimentally observed the discrete diffraction of light in a coherently prepared multi-level atomic medium. This is achieved by launching a probe beam into an optical lattice induced from the interference of two coupling beams. The diffraction pattern can be controlled through the atomic parameters such as two-photon detuning and temperature, as well as orientations of the coupling and probe beams. Clear diffraction patterns occur only near the two-photon resonance.

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Section: Experimental Setup and Theorymentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Observation of discrete diffraction patterns in an optically induced lattice

Sheng¹,

Wang²,

Miri³

et al. 2015

Opt. Express

Self Cite

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show abstract

“…On the other hand, the systems that realize much higher Kerr coefficients are the coherently prepared atomic ensembles under the conditions of electromagnetically induced transparency (EIT). The response of these atomic ensembles to the input light field is virtually immediate in activating the third and higher order nonlinearity as demonstrated by the experimental 73 74 75 and theoretical studies 76 77 78 79 80 81 , thus neglecting the phase noise effect in such Kerr nonlinearities.…”

Section: Discussion On Feasibility Of Xpmmentioning

confidence: 99%

Highly Efficient Processing of Multi-photon States

Lin

2015

Sci Rep

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How to implement multi-qubit gates is an important problem in quantum information processing. Based on cross phase modulation, we present an approach to realizing a family of multi-qubit gates that deterministically operate on single photons as the qubits. A general n-qubit unitary operation is a typical example of these gates. The approach greatly relax the requirement on the resources, such as the ancilla photons and coherent beams, as well as the number of operations on the qubits. The improvement in this framework may facilitate large scale quantum information processing.

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“…their propagating velocity are much less than c; see Sec. III C below) [7][8][9][10][11][12][13][14][15] and their storage and retrieval [16,17] can also be realized. However, up to now all the studies on slow-light solitons in EIT-based media have been limited in semicalssical regime, i.e.…”

Section: Introductionmentioning

confidence: 99%

Quantum Squeezing of Slow-Light Solitons

Zhu,

Zhang,

Huang

2022

Preprint

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We investigate the quantum squeezing of slow-light solitons generated in a Λ-shaped three-level atomic system working under condition of electromagnetically induced transparency (EIT). Starting from the Heisenberg-Langevin and Maxwell equations governing the quantum dynamics of atoms and probe laser field, we derive a quantum nonlinear Schrödinger equation controlling the evolution of the probe-field envelope. By using a direct perturbation approach to diagonalize the effective Hamiltonian (where the atomic variables have been eliminated), we carry out a detailed calculation on the quantum fluctuations of a slow-light soliton, expanded as a superposition of the complete and orthonormalized set of eigenfunctions obtained by solving the Bogoliubov-de Gennes (BdG) equations describing the quantum fluctuations. We show that due to the giant Kerr nonlinearity contributed from the EIT effect, significant quantum squeezing of the slow-light soliton can be realized within a short propagation distance. The results reported here are helpful for understanding the quantum property of slow-light solitons and for realizing light squeezing via EIT in cold atomic gases experimentally.

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Spatial Domain Interactions between Ultraweak Optical Beams

Cited by 11 publications

References 33 publications

Observation of discrete diffraction patterns in an optically induced lattice

Observation of discrete diffraction patterns in an optically induced lattice

Highly Efficient Processing of Multi-photon States

Quantum Squeezing of Slow-Light Solitons

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