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quant-ph2025

Storage and retrieval of optical skyrmions with topological characteristics

Jinwen Wang, Xin Yang, Yun Chen +10

Optical skyrmions are topological structures of light whose defining property, the skyrmion number, is robust against perturbations. This makes them attractive for applications in…

quant-ph2025

QPPG: Quantum-Preconditioned Policy Gradient for Link Adaptation in Rayleigh Fading Channels

Oluwaseyi Giwa, Muhammad Ahmed Mohsin, Folarin Jubril Adesola +1

Reliable link adaptation is critical for efficient wireless communications in dynamic fading environments. However, reinforcement learning (RL) solutions often suffer from unstable…

quant-ph2025★ 1 cited

Is diamagnetism really acausal?

Niclas Westerberg, Stephen M. Barnett

Diamagnetism, in which the magnetisation in a medium opposes the direction of an applied magnetic field, is a weak but familiar effect in a wide class of materials. Being weak it i…

quant-ph2025★ 11 cited

Quantum-enhanced second harmonic generation beyond the photon pairs regime

Thomas Dickinson, Ivi Afxenti, Giedre Astrauskaite +8

Two-photon processes are crucial in applications like microscopy and microfabrication, but their low cross-section requires intense illumination and limits, e.g., the penetration d…

quant-ph2025★ 12 cited

Chemically Tuning Room Temperature Pulsed Optically Detected Magnetic Resonance

Sarah K. Mann, Angus Cowley-Semple, Emma Bryan +4

Optical detection of magnetic resonance enables spin-based quantum sensing with high spatial resolution and sensitivity-even at room temperature-as exemplified by solid-state defec…

quant-ph2025

Is there a conflict between causality and diamagnetism?

Niclas Westerberg, Stephen M. Barnett

There is a long-standing apparent conflict between the existence of diamagnetism and causality as expressed through the Kramers-Kronig relations. In essence, using causality argume…

quant-ph2024★ 4 cited

Corrections to the Optomechanical Hamiltonian from Quadratic Fluctuations of a Moving Mirror

Salvatore Butera

We extend the theory of the radiation pressure to include quadratic fluctuations in the position of a moving mirror. This enables the introduction of a generalized radiation pressu…

quant-ph2024★ 152 cited

Advances in quantum imaging

Hugo Defienne, Warwick P. Bowen, Maria Chekhova +5

Modern imaging technologies are widely based on classical principles of light or electromagnetic wave propagation. They can be remarkably sophisticated, with recent successes rangi…

quant-ph2024

Towards robust detection of entangled two-photon absorption

Raj Pandya, Patrick Cameron, Chloé Vernière +5

Over the last 50 years entangled photon pairs have received attention for use in lowering the flux in two-photon absorption imaging and spectroscopy. Despite this, evidence for ent…

quant-ph2024

Generating quantum non-local entanglement with mechanical rotations

Marko Toroš, Maria Chiara Braidotti, Swain Ashutosh +3

Recent experiments have searched for evidence of the impact of non-inertial motion on the entanglement of particles. The success of these endeavours has been hindered by the fact t…

quant-ph2024★ 10 cited

Enhancing interferometry using weak value amplification with real weak values

Jing-Hui Huang, Kyle M. Jordan, Adetunmise C. Dada +2

We introduce an ultra-sensitive interferometric protocol that combines weak value amplification (WVA) with traditional interferometry. This protocol WVA + interferometry uses weak…

quant-ph2024★ 58 cited

Room-temperature optically detected coherent control of molecular spins

Adrian Mena, Sarah K. Mann, Angus Cowley-Semple +5

Benefiting from both molecular tunability and versatile methods for deployment, optically interfaced molecular spins are a promising platform for quantum technologies such as sensi…

quant-ph2024★ 20 cited

Dark Matter Searches with Levitated Sensors

Eva Kilian, Markus Rademacher, Jonathan M. H. Gosling +8

Motivated by the current interest in employing quantum sensors on Earth and in space to conduct searches for new physics, we provide a perspective on the suitability of large-mass…

quant-ph2023★ 22 cited

Fluorescence Lifetime Hong-Ou-Mandel Sensing

Ashley Lyons, Vytautas Zickus, Raúl Álvarez-Mendoza +5

Fluorescence Lifetime Imaging Microscopy in the time domain is typically performed by recording the arrival time of photons either by using electronic time tagging or a gated detec…

quant-ph2023★ 17 cited

Dephasing due to electromagnetic interactions in spatial qubits

Martine Schut, Herre Bosma, MengZhi Wu +3

Matter-wave interferometers with micro-particles will enable the next generation of quantum sensors to probe minute quantum phase information. Therefore, estimating the loss of coh…

quant-ph2023★ 6 cited

Optomechanical Backreaction of Quantum Field Processes in Dynamical Casimir Effect

Yu-Cun Xie, Salvatore Butera, Bei-Lok Hu

Dynamical Casimir effect (DCE) and cosmological particle creation (CPC) share the same underlying physical mechanism, that of parametric amplification of vacuum fluctuations in the…

quant-ph2023★ 29 cited

Decoherence of a matter-wave interferometer due to dipole-dipole interactions

Paolo Fragolino, Martine Schut, Marko Toroš +2

Matter-wave interferometry with nanoparticles will enable the development of quantum sensors capable of probing ultraweak fields with unprecedented applications for fundamental phy…

quant-ph2023★ 1 cited

Optimal Superpositions for Particle Detection via Quantum Phase

Eva Kilian, Marko Toroš, P. F. Barker +1

Exploiting quantum mechanics for sensing offers unprecedented possibilities. State of the art proposals for novel quantum sensors often rely on the creation of large superpositions…

quant-ph2023★ 8 cited

Noise and dissipation on a moving mirror induced by the dynamical Casimir emission

Salvatore Butera

We adopt an open quantum system approach to study the effects of the back-reaction from a quantum field onto the dynamics of a moving mirror. We describe the coupling between the m…

quant-ph2023★ 7 cited

Enhanced entanglement in multi-bath spin-boson models

Charlie R. Hogg, Federico Cerisola, James D. Cresser +2

The spin-boson model usually considers a spin coupled to a single bosonic bath. However, some physical situations require coupling of the spin to multiple environments. For example…

quant-ph2023★ 55 cited

Building a Quantum-ready Ecosystem

Abhishek Purohit, Maninder Kaur, Zeki Can Seskir +2

The emergence of quantum technologies has led to groundbreaking advancements in computing, sensing, secure communications, and simulation of advanced materials with practical appli…

quant-ph2023★ 4 cited

Field observables near a fluctuating boundary

Federico Armata, Salvatore Butera, Federico Montalbano +2

We review several aspects related to the confinement of a massless scalar field in a cavity with a movable conducting wall of finite mass, free to move around its equilibrium posit…

quant-ph2023★ 4 cited

Indefinite causal key distribution

Hector Spencer-Wood

We propose a quantum key distribution (QKD) protocol that is carried out in an indefinite causal order (ICO). In QKD, one considers a setup in which two parties, Alice and Bob, sha…

quant-ph2023★ 3 cited

Rotational properties of two interacting cold polar molecules: linear, symmetric, and asymmetric tops

Felipe Isaule, Robert Bennett, Jörg B. Götte

We examine the potential-energy curves and polarization of the dipole moments of two static polar molecules under the influence of an external dc electric field and their anisotrop…