Persistent Quantum Beats and Long-Distance Entanglement from Waveguide-Mediated Interactions

Zheng, Haizhong; Baranger, Harold U.

doi:10.1103/physrevlett.110.113601

Cited by 279 publications

(312 citation statements)

References 49 publications

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“…While this Review has described some applications that utilize the high Q, there are many more opportunities such as in nonlinearity enhancement and in quantum optical applications that have not been explored. The long-range interactions in FabryPérot BICs may be useful for nanophotonic circuits 104 and for quantum information processing 105,106 . It has also been proposed that the light intensity may act as another tuning parameter in nonlinear materials, which may enable robust BICs 248 , tunable channel dropping 249 , light storage and release 250,251 , and frequency comb generation 252 .…”

Section: Discussionmentioning

confidence: 99%

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Bound states in the continuum

et al. 2016

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Bound states in the continuum are waves that, defying conventional wisdom, remain localized even though they coexist with a continuous spectrum of radiating waves that can carry energy away. Their existence was first proposed in quantum mechanics and, being a general wave phenomenon, later identified in electromagnetic, acoustic, and water waves. They have been studied in a wide variety of material systems such as photonic crystals, optical waveguides and fibers, piezoelectric materials, quantum dots, graphene, and topological insulators. This Review describes recent developments in this field with an emphasis on the physical mechanisms that lead to these unusual states across the seemingly very different platforms. We discuss recent experimental realizations, existing applications, and directions for future work.

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Section: Discussionmentioning

confidence: 99%

“…Such long-range interactions have been studied in cavities or qubits coupled through a waveguide [104][105][106] and for two leaky solitons coupled through free-space radiation 107 .…”

Section: Fabry-pérot Bic (Through Coupled Resonances)mentioning

confidence: 99%

Bound states in the continuum

et al. 2016

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“…Spontaneous entanglement generation in waveguide setups has already been predicted [9,10]. Many other interesting phenomena, such as mesoscopic entanglement [11], long-distance quantum beats [12], or the formation of sub-and superradiant states [13], show that waveguides are excellent platforms for quantum-information processing.…”

Section: Introductionmentioning

confidence: 99%

Chiral route to spontaneous entanglement generation

et al. 2015

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We study the spontaneous entanglement generation between two qubits chirally coupled to a waveguide. The maximum achievable concurrence is demonstrated to increase by a factor of 4/e ∼ 1.5 as compared to the nonchiral coupling situation. The proposed entanglement scheme is shown to be robust against variation of the qubit properties such as detuning and separation, which are critical in the nonchiral case. This result relaxes the restrictive requirements of the nonchiral situation, paving the way toward a realistic implementation. Our results demonstrate the potential of chiral waveguides for quantum entanglement protocols.

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“…Using the flux conservation relation (14), we prove in Appendix A.2 that Green functions in (34) and (35) can be computed using the effective Hamiltonian of the cavity…”

Section: Multi-photon S Matrixmentioning

confidence: 99%

Fano interference in two-photon transport

Fan

2016

Phys. Rev. A

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We present a general input-output formalism for the few-photon transport in multiple waveguide channels coupled to a local cavity. Using this formalism, we study the effect of Fano interference in two-photon quantum transport. We show that the physics of Fano interference can manifest as an asymmetric spectral line shape in the frequency dependence of the two-photon correlation function.The two-photon fluorescence spectrum, on the other hand, does not exhibit the physics of Fano interference.

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Persistent Quantum Beats and Long-Distance Entanglement from Waveguide-Mediated Interactions

Cited by 279 publications

References 49 publications

Bound states in the continuum

Bound states in the continuum

Chiral route to spontaneous entanglement generation

Fano interference in two-photon transport

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