Cavity-free optical isolators and circulators using a chiral cross-Kerr nonlinearity

K Xia, F Nori, M Xiao - Physical review letters, 2018 - APS
Optical nonlinearity has been widely used to try to produce optical isolators. However, this is
very difficult to achieve due to dynamical reciprocity. Here, we show the use of the chiral …

Fundamental Distinction of Electromagnetically Induced Transparency and Autler–Townes Splitting in Breaking the Time‐Reversal Symmetry

H Wu, Y Ruan, Z Li, MX Dong, M Cai… - Laser & Photonics …, 2022 - Wiley Online Library
Despite the essential difference in underlying physics, electromagnetically induced
transparency (EIT) and Autler–Townes splitting (ATS) are difficult to be discriminated …

Exchange of optical vortices using an electromagnetically-induced-transparency–based four-wave-mixing setup

HR Hamedi, J Ruseckas, G Juzeliūnas - Physical Review A, 2018 - APS
We propose a scheme to exchange optical vortices of slow light using the phenomenon of
electromagnetically induced transparency in a four-level double-Λ atom-light coupling …

Coherence properties and quantum control of silicon vacancy color centers in diamond

JN Becker, C Becher - physica status solidi (a), 2017 - Wiley Online Library
Atomic‐scale impurity spins, also called color centers, in an otherwise spin‐free diamond
host lattice have proven to be versatile tools for applications in solid‐state‐based quantum …

Complete energy conversion between light beams carrying orbital angular momentum using coherent population trapping for a coherently driven double- atom-light …

HR Hamedi, E Paspalakis, G Žlabys, G Juzeliūnas… - Physical Review A, 2019 - APS
We propose a procedure to achieve a complete energy conversion between laser pulses
carrying orbital angular momentum (OAM) in a cloud of cold atoms characterized by a …

Few-photon all-optical phase rotation in a quantum-well micropillar cavity

T Kuriakose, PM Walker, T Dowling, O Kyriienko… - Nature …, 2022 - nature.com
Photonic platforms are an excellent setting for quantum technologies as weak photon–
environment coupling ensures long coherence times. The second key ingredient for …

Optical nonreciprocity and nonreciprocal photonic devices with directional four-wave mixing effect

T Shui, WX Yang, MT Cheng, RK Lee - Optics Express, 2022 - opg.optica.org
A scheme for magnetic-free optical nonreciprocity in an ensemble of four-level cold atoms is
proposed by exploiting the directional four-wave mixing effect. Using experimentally …

Cross-kerr nonlinearity for phonon counting

S Ding, G Maslennikov, R Hablützel, D Matsukevich - Physical review letters, 2017 - APS
State measurement of a quantum harmonic oscillator is essential in quantum optics and
quantum information processing. In a system of trapped ions, we experimentally …

Inelastic two-wave mixing induced high-efficiency transfer of optical vortices

X Deng, T Shui, WX Yang - Optics Express, 2024 - opg.optica.org
A scheme for high-efficiency transfer of optical vortices is proposed by an inelastic two-wave
mixing (ITWM) process in an inverted-Y four-level atomic medium, which is originally …

[HTML][HTML] Temporally ultralong biphotons with a linewidth of 50 kHz

YS Wang, KB Li, CF Chang, TW Lin, JQ Li, SS Hsiao… - APL Photonics, 2022 - pubs.aip.org
We report the generation of biphotons, with a temporal full width at the half maximum
(FWHM) of 13.4±0.3 µs and a spectral FWHM of 50±1 kHz, via the process of spontaneous …