Chiral quantum optics using a topological resonator

Barik, Sabyasachi; Karaşahin, Aziz; Mittal, Sunil; Waks, Edo; Hafezi, Mohammad

doi:10.1103/physrevb.101.205303

Cited by 119 publications

(79 citation statements)

References 34 publications

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“…This enables us to demonstrate chiral coupling of a QD located within the resonator. Our results in this regard are consistent with those reported very recently by Barik et al [33]. We first determine the mode spectrum of the resonator using high power PL, exciting the QD ensemble away from the resonator-waveguide interface (location given by the dashed circle in Fig.6a).…”

Section: B Topological Ring Resonatorsupporting

confidence: 91%

Chiral topological photonics with an embedded quantum emitter

Mehrabad¹,

Foster²,

Dost³

et al. 2020

Optica

110

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Section: B Topological Ring Resonatorsupporting

confidence: 91%

Chiral topological photonics with an embedded quantum emitter

Mehrabad¹,

Foster²,

Dost³

et al. 2020

Optica

110

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“…Eq. (19)]. We show results with asymmetric pumping (P 2 = 0) for increasingly strong coherent coupling strengths g (increasingly thick colored lines).…”

Section: Spectrummentioning

confidence: 99%

“…The most extreme case is chiral (or one-way) coupling [7][8][9]. Exploiting chiral light-matter interactions is predicted to lead to a host of exciting applications in quantum communication, information, and computing, including nonreciprocal singlephoton devices [10][11][12], optical isolators [13], optical circulators [14,15], integrated quantum optical circuits [16][17][18][19], and quantum networks [20][21][22][23]. Concurrently, new horizons in more fundamental aspects are expected, such as in quantum entanglement [24], unconventional many-body states [25], and emergent quasiparticles [26].…”

Section: Introductionmentioning

confidence: 99%

Asymmetric coupling between two quantum emitters

et al. 2020

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We study a prototypical model of two coupled two-level systems, where the competition between coherent and dissipative coupling gives rise to a rich phenomenology. In particular, we analyze the case of asymmetric coupling, as well as the limiting case of chiral (or one-way) coupling. We investigate various quantum optical properties of the system, including its steady-state populations, power spectrum, and second-order correlation functions, and outline the characteristic features which emerge in each quantity as one sweeps through the nontrivial landscape of effective complex couplings. Most importantly, we reveal instances of population trapping, unexpected spectral features, and strong emission correlations.

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“…[ 21,22 ] In the photonic domain, QVH topological insulators have been experimentally realized based on nanophotonic crystals, leading to many applications including topological waveguides, [ 13–15 ] nanophotonic lasers, [ 23 ] and topological quantum cavity electrodynamics. [ 24 ] On the other hand, experimental realizations of the QVH topological insulators for phonons have been limited only to bulk acoustic and mechanical systems operating at relatively low frequencies [ 25 ] (<1.5 MHz). To date, despite theoretical prediction, [ 26 ] experimental realization of phononic QVH topological insulators on the VHF integrated nano‐electromechanical platform has remained unavailable.…”

Section: Figurementioning

confidence: 99%

Experimental Demonstration of Dual‐Band Nano‐Electromechanical Valley‐Hall Topological Metamaterials

Sun

2021

Advanced Materials

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Suppression of undesired backscattering of very‐high‐frequency elastic signals has been considered as a grand challenge in integrated phononic circuits. Originating from condensed‐matter physics, valley‐Hall topological insulators provide an intriguing strategy to overcome this challenge. To date, phononic valley‐Hall topological insulators have been demonstrated only in bulk acoustic and mechanical systems operating at relatively low frequencies. Here, an integrated nano‐electromechanical valley‐Hall topological insulator operating in the very‐high‐frequency regime is experimentally realized. Valley kink states that are backscattering‐immune against sharp bends and exhibit the “valley‐momentum locking” effect simultaneously in the fundamental (≈60 MHz) and second‐order (≈120 MHz) frequency bands are demonstrated. It is further shown that the propagation directions of these dual‐band valley kink states are always locked to their valley pseudospins. The results not only enable various applications in very‐high‐frequency integrated phononic circuits with enhanced robustness and capacity, but also open the door to experimental exploration of mechanical nonlinearities, particularly those involving the fundamental and second‐order frequencies, in topologically nontrivial nanostructures.

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Chiral quantum optics using a topological resonator

Cited by 119 publications

References 34 publications

Chiral topological photonics with an embedded quantum emitter

Chiral topological photonics with an embedded quantum emitter

Asymmetric coupling between two quantum emitters

Experimental Demonstration of Dual‐Band Nano‐Electromechanical Valley‐Hall Topological Metamaterials

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