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Controlling the depolarization of light is a long-standing open problem. In recent years, many demonstrations have used the polarization of single photons to encode quantum information. The depolarization of these photons is equivalent to…

Quantum Physics · Physics 2014-02-04 A. Shaham , H. S. Eisenberg

Optomechanical systems typically use light to control the quantum state of a mechanical resonator. In this paper, we propose a scheme for controlling the quantum state of light using the mechanical degree of freedom as a controlled beam…

Quantum Physics · Physics 2016-07-04 Sahar Basiri-Esfahani , Casey R Myers , Joshua Combes , G. J. Milburn

The delayed-choice quantum eraser has been intensively studied for the wave-particle duality of a single photon in an interferometric system over the last decades. Coincidence measurements between quantum erasers have also been applied for…

Quantum Physics · Physics 2023-10-23 Byoung S. Ham

The generation of high-performance nonclassical light remains a cornerstone of quantum technologies, yet faces a fundamental trade-off between emission purity and brightness. Here, we demonstrate that cavity-mediated many-body spin-exchange…

Quantum Physics · Physics 2026-04-20 Tang Jing , Yuangang Deng

Molecular matter-wave interferometry enables novel strategies for manipulating the internal mechanical motion of complex molecules. Here, we show how chiral molecules can be prepared in a quantum superposition of two enantiomers by…

Quantum Physics · Physics 2021-09-22 Benjamin A. Stickler , Mira Diekmann , Robert Berger , Daqing Wang

The quantum control of spin-correlated radical pairs (SCRPs) holds promise for the targeted manipulation of magnetic field effects, with potential applications ranging from the design of noise-resilient quantum information processors to…

Quantum Physics · Physics 2026-01-16 Farhan T. Chowdhury , Luke D. Smith , Daniel R. Kattnig

Chiral molecules are instrumental for molecular recognition in living organisms. Distinguishing between two opposite enantiomers, the mirror twins of the same chiral molecule, is both vital and challenging. Photoelectron circular dichroism…

Chemical Physics · Physics 2021-12-07 Andres F. Ordonez , David Ayuso , Piero Decleva , Olga Smirnova

In nanostructures, the light-matter interaction can be engineered to be chiral. In the fully quantum regime, a chiral one-dimensional atom, a photon propagating in one direction interacts with the atom; a photon propagating in the other…

Polarization-dependent photon spectroscopy (dichroism) of the second-harmonic generation (SHG) response is shown to reveal chiral and magnetic properties of a sample. Two dichroic signals are allowed with electric-dipole (E1) and…

Strongly Correlated Electrons · Physics 2019-12-11 S. W. Lovesey , G. van der Laan

We show that the combination of two achiral components - atomic or molecular target plus a circularly polarized photon - can yield chirally structured photoelectron angular distributions. For photoionization of CO, the angular distribution…

A novel optical method for distinguishing chiral molecules is proposed and validated within a quantum simulator employing a trapped-ion qudit. This approach correlates the sign disparity of the dipole moment of chiral molecules with…

Quantum Physics · Physics 2024-03-11 Teng Liu , Fa Zhao , Pengfei Lu , Qifeng Lao , Min Ding , Ji Bian , Feng Zhu , Le Luo

Angle-resolved multiphoton ionization of fenchone and camphor by short intense laser pulses is computed by the time-dependent Single Center (TDSC) method. Thereby, the photoelectron circular dichroism (PECD) in the three-photon resonance…

Atomic and Molecular Clusters · Physics 2018-06-11 Anne D. Müller , Anton N. Artemyev , Philipp V. Demekhin

We report on the first experimental demonstration of enantioselective rotational control of chiral molecules with a laser field. In our experiments, two enantiomers of propylene oxide are brought to accelerated unidirectional rotation by…

We propose a method to induce strong effective interactions between photons mediated by an atomic ensemble. To achieve this, we use the so-called stationary light effect to enhance the interaction. Regardless of the single-atom coupling to…

Quantum Physics · Physics 2018-01-08 Ivan Iakoupov , Johannes Borregaard , Anders S. Sørensen

Quantum interference in coherent transport through single molecular rings may provide a mechanism to control current in molecular electronics. We investigate its applicability by using a single-particle Green function method combined with…

Mesoscale and Nanoscale Physics · Physics 2009-08-11 San-Huang Ke , Weitao Yang , Harold U. Baranger

We experimentally demonstrate a method to control the relative amount of quantum and classical energy correlations between two photons from a pair emitted by spontaneous parametric downconversion. Decoherence in the energy basis is achieved…

Quantum Physics · Physics 2017-11-29 Stefan Lerch , André Stefanov

Wave-particle duality and entanglement are two fundamental characteristics of quantum mechanics. All previous works on experimental investigations in wave{particle properties of single photons (or single particles in general) show that a…

Quantum Physics · Physics 2023-03-27 Kai Wang , Daniel R. Terno , Caslav Brukner , Shining Zhu , Xiao-Song Ma

Recently developed circularly polarized X-ray light sources can probe ultrafast chiral electronic and nuclear dynamics through spatially localized resonant core transitions. We present simulations of time-resolved circular dichroism (TRCD)…

Chemical Physics · Physics 2017-02-08 Jérémy R. Rouxel , Markus Kowalewski , Shaul Mukamel

Chiral light-matter interactions have been investigated for two centuries, leading to the discovery of many chiroptical processes used for discrimination of enantiomers. Whereas most chiroptical effects result from a response of bound…

We consider the reflection of a photon by a two-level system in a quasi-one-dimensional waveguide. This is important in part because it forms the backdrop for more complicated proposals where many emitters are coupled to the waveguide:…

Optics · Physics 2024-12-18 Ben Lang , Edmund Harbord , Ruth Oulton