Coherent optical non-reciprocity in axisymmetric resonators

Lenferink, Erik J.; Wei, Guohua; Stern, Nathaniel P.

doi:10.1364/oe.22.016099

Cited by 45 publications

(27 citation statements)

References 43 publications

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“…In conventional nonreciprocal optical devices, this is induced by a magnetic field in conjunction with magneto-optical materials, the time modulation of the optical properties of the system, or an optical nonlinearity. Non-reciprocity that relies on chiral coupling to break Lorentz reciprocity, however, can be based solely on the atomic spin, which is in general associated with a polarization-dependent coupling strength to realize optical isolators and circulators [49,50]. Optical isolators and circulators utilizing chiral coupling to achieve non-reciprocal absorption or phase shifts have been demonstrated with either a small ensemble of atoms coupled to an optical nanofiber, cf.…”

Section: Elementary Devices Based On Chiral-light Matter Interactionmentioning

confidence: 99%

Chiral quantum optics

Lodahl¹,

Mahmoodian²,

Stobbe³

et al. 2017

Nature

1,401

1,178

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At the most fundamental level, the interaction between light and matter is manifested by the emission and absorption of single photons by single quantum emitters. Controlling light-matter interaction is the basis for diverse applications ranging from light technology to quantum-information processing. Many of these applications are nowadays based on photonic nanostructures strongly benefitting from their scalability and integrability. The confinement of light in such nanostructures imposes an inherent link between the local polarization and propagation direction of light. This leads to chiral light-matter interaction, i.e., the emission and absorption of photons depend on the propagation direction and local polarization of light as well as the polarization of the emitter transition. The burgeoning research field of chiral quantum optics offers fundamentally new functionalities and applications both for single emitters and ensembles thereof. For instance, a chiral light-matter interface enables the realization of integrated non-reciprocal single-photon devices and deterministic spin-photon interfaces. Moreover, engineering directional photonic reservoirs opens new avenues for constructing complex quantum circuits and networks, which may be applied to simulate a new class of quantum many-body systems.

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Section: Elementary Devices Based On Chiral-light Matter Interactionmentioning

confidence: 99%

Chiral quantum optics

Lodahl¹,

Mahmoodian²,

Stobbe³

et al. 2017

Nature

1,401

1,178

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“…More recently, polarization selectivity has brought a new dimension to cavity QED. For example, accessing specific sublevels using polarized light can merge time-reversal symmetry breaking into chiral photonics [12][13][14]. Although individual atoms allow strong coupling in circularly-polarized cavity QED [15], the degenerate valley-specific excitons of transition metal dichalcogenides (TMDs) are a model material system for achieving polarization selectivity with bosonic excitonpolaritons ( Fig.…”

mentioning

confidence: 99%

Valley-polarized exciton–polaritons in a monolayer semiconductor

et al. 2017

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Single layers of transition metal dichalcogenides are two-dimensional direct bandgap semiconductors with degenerate, but inequivalent, 'valleys' in the electronic structure that can be selectively excited by polarized light. Coherent superpositions of light and matter, exciton-polaritons, have been observed when these materials are strongly coupled to photons, but these hybrid quasiparticles do not harness the valley-sensitive excitations of monolayer transition metal dichalcogenides. Here, we demonstrate evidence for valley polarized exciton-polaritons in monolayers of MoS2 embedded in a dielectric microcavity. Unlike traditional microcavity exciton-polaritons, these light-matter quasiparticles emit polarized light with spectral Rabi splitting. The interplay of cavity-modified exciton dynamics and intervalley relaxation in the high-cooperativity regime causes valley polarized exciton-polaritons to persist to room temperature, distinct from the vanishing polarization in bare monolayers. Achieving polarization-sensitive polaritonic devices operating at room temperature presents a pathway for manipulating novel valley degrees of freedom in coherent states of light and matter.

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“…It has already been shown that the breaking of Lorentz reciprocity is pivotal for isolators [20]. One class of nonreciprocal systems which can be used for isolators and circulators is based on the breaking of the time-reversal symmetry.In general, the breaking of time-reversal symmetry in optical systems can be generated by two different ways: (i) using magneto-optical effects (e.g., Faraday rotation) [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] and (ii) non-magnetic strategies (e.g., employing optical nonlinearity [36][37][38][39][40][41][42][43][44][45][46][47][48][49][50], dynamical modulation [51-75], etc). Especially, as a non-magnetic strategy, optical nonreciprocity in the coupled cavity modes with relative phase has drawn more and more attentions in recent years, and many differ- * Electronic address: davidxu0816@163.com…”

mentioning

confidence: 99%

Single-photon nonreciprocal transport in one-dimensional coupled-resonator waveguides

Chen

et al. 2017

Phys. Rev. A

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We study the transport of a single photon in two coupled one-dimensional semi-infinite coupled-resonator waveguides (CRWs), in which both end sides are coupled to a dissipative cavity. We demonstrate that a single photon can transfer from one semi-infinite CRW to the other nonreciprocally. Based on such nonreciprocity, we further construct a three-port single-photon circulator by a T-shaped waveguide, in which three semi-infinite CRWs are pairwise mutually coupled to each other. The single-photon nonreciprocal transport is induced by the breaking of the time-reversal symmetry and the optimal conditions for these phenomena are obtained analytically. The CRWs with broken time-reversal symmetry will open up a kind of quantum devices with versatile applications in quantum networks.

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Coherent optical non-reciprocity in axisymmetric resonators

Cited by 45 publications

References 43 publications

Chiral quantum optics

Chiral quantum optics

Valley-polarized exciton–polaritons in a monolayer semiconductor

Single-photon nonreciprocal transport in one-dimensional coupled-resonator waveguides

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