Quantum interference induced photon localization and delocalization in Kerr-type nonlinear cavities

Meher, Nilakantha; Sivakumar, Srinivasan M.

doi:10.1364/josab.33.001233

Cited by 10 publications

(11 citation statements)

References 56 publications

(47 reference statements)

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“…The scalability of the array is an additional advantage for realizing distance communication. Cavities have been used to realize many interesting phenomena such as entanglement generation [24,25,26,27], nonclassical state preparation [28,29,30,31,32], localizationdelocalization [33,34], heat transfer [35,36,37], photon blockade [38,39,40,41,42] etc by properly tuning the resonance frequencies or including material medium inside it. In addition, suitable choices of coupling strengths between the cavities provide perfect transfer of photons between the cavities [16,17,43,44].…”

Section: Introductionmentioning

confidence: 99%

Scheme for realizing quantum dense coding via entanglement swapping

Meher

2020

Preprint

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Quantum dense coding is a protocol for transmitting two classical bits of information from a sender (Alice) to a remote receiver (Bob) by sending only one quantum bit (qubit). In this article, we propose an experimentally feasible scheme to realize quantum dense coding via entanglement swapping in a cavity array containing a certain number of two-level atoms. Proper choice of system parameters such as atomcavity couplings and inter-cavity couplings allows perfect transfer of information. A high fidelity transfer of information is shown to be possible by using recently achieved experimental values in the context of photonic crystal cavities and superconducting resonators. To mimic experimental imperfections, disorder in both the coupling strengths and resonance frequencies is considered.

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Section: Introductionmentioning

confidence: 99%

Scheme for realizing quantum dense coding via entanglement swapping

Meher

2020

Preprint

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“…Transport of photons in an array can be modified by embedding atoms or Kerr-medium in the cavities which modify the cavity resonance frequencies [11][12][13][14][15]. This helps to realize phenomenon such as photon blockade [11], quantum state switching [2], generation of cat states [16], localization and delocalization [17,18], etc.…”

Section: Introductionmentioning

confidence: 99%

Atomic switch for control of heat transfer in coupled cavities

Meher

Sivakumar

2019

J. Opt. Soc. Am. B

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Controlled heat transfer and thermal rectification in a system of two coupled cavities connected to thermal reservoirs are discussed. Embedding a dispersively interacting two-level atom in one of the cavities allows switching from a thermally conducting to resisting behavior. By properly tuning the atomic state and system-reservoir parameters, direction of current can be reversed. It is shown that a large thermal rectification is achievable in this system by tuning the cavity-reservoir and cavity-atom couplings. Partial recovery of diffusive heat transport in an array of N cavities containing one dispersively coupled atom is discussed. *

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“…Suitable tailoring of inter-cavity coupling has been put to use in entanglement generation 3 , quantum state preparation 4 , 5 , state transfer between spatially separated cavities 6 , 7 , exhibition of quantum interference 8 , 9 , Rabi oscillation 10 , to mention a few. Consideration of cavities filled with nonlinear media has led to exploration of other quantum phenomena 11 , such as photon blockade 12 – 14 and localization-delocalization related to bunching and antibunching of photons 8 , 15 , 16 . Interplay between intra-cavity nonlinearity and inter-cavity coupling strength has been exploited to control the photon statistics in cavity 17 .…”

Section: Introductionmentioning

confidence: 99%

Duality and quantum state engineering in cavity arrays

Meher

Sivakumar

Panigrahi

2017

Sci Rep

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A system of two coupled cavities with N − 1 photons is shown to be dynamically equivalent to an array of N coupled cavities containing one photon. Every transition in the two cavity system has a dual phenomenon in terms of photon transport in the cavity array. This duality is employed to arrive at the required coupling strengths and nonlinearities in the cavity array so that controlled photon transfer is possible between any two cavities. This transfer of photons between two of the cavities in the array is effected without populating the other cavities. The condition for perfect transport enables perfect state transfer between any two cavities in the array. Further, possibility of high fidelity generation of generalized NOON states in two coupled cavities, which are dual to the Bell states of the photon in the cavity array, is established.

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Quantum interference induced photon localization and delocalization in Kerr-type nonlinear cavities

Cited by 10 publications

References 56 publications

Scheme for realizing quantum dense coding via entanglement swapping

Scheme for realizing quantum dense coding via entanglement swapping

Atomic switch for control of heat transfer in coupled cavities

Duality and quantum state engineering in cavity arrays

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