Efficient lambda-enhanced gray molasses using an EIT-based laser locking scheme

• URL: http://arxiv.org/abs/2510.13360v1
• Date: Wed, 15 Oct 2025 09:46:54 GMT
• Title: Efficient lambda-enhanced gray molasses using an EIT-based laser locking scheme
• Authors: Timothy Leese, Siobhan Patrick, Silvia Bergamini, Calum MacCormick,
• Abstract summary: We present a novel implementation of gray molasses cooling in a non-standard beam geometry and with an inexpensive laser locking set-up.<n>We show that this approach achieves sufficient coherence to enable effective gray molasses cooling without the need for costly GHz electronics.<n>A wave-function Monte Carlo analysis supports the experimental findings, offering insight into the cooling dynamics of this unconventional scheme.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We present a novel implementation of lambda-enhanced gray molasses cooling in a non-standard beam geometry and with an inexpensive laser locking set-up. In contrast to the established use of resource-intensive phase locking methods, our laser system uses two independent lasers, frequency -locked to a spectral feature produced by an electromagnetically induced transparency (EIT) resonance. We show that this approach achieves sufficient coherence to enable effective gray molasses cooling without the need for costly GHz electronics, significantly reducing the complexity and cost of experimental setups and represents a step toward more accessible cold atom technologies. A wave-function Monte Carlo analysis supports the experimental findings, offering insight into the cooling dynamics of this unconventional scheme

Related papers

• Rapid multi-mode trapped-ion laser cooling in a phase-stable standing wave [0.0]
  Integrated optical control of interest for scaling may enable increased performance of coherent and incoherent operations.<n>We utilize multi-channel integrated delivery of ultraviolet to infrared wavelengths required for calcium ion control.<n>We experimentally verify a long-standing prediction, realizing Doppler cooling to below the conventional Doppler limit.
  arXiv  Detail & Related papers  (2025-12-11T18:28:07Z)
• Dual-Frequency Absorption Spectroscopy in Laser-Cooled Rubidium Atoms: Theoretical Modeling and Experiment [0.0]
  We demonstrate dual-frequency absorption spectroscopy (DFAS) using laser-cooled 87Rb and 85Rb atoms.<n>Doppler-free resonances with high-contrast are produced, which suggest the suitability of using DFAS for laser stabilization in a cold-atom-based clock.<n>We have extended our model to accurately model the dual-frequency spectrum produced in rubidium cell.
  arXiv  Detail & Related papers  (2025-08-25T15:56:08Z)
• Trapped-ion laser cooling in structured light fields [0.0]
  We consider laser cooling in structured light profiles enabling selective sideband excitation with nulled carrier drive.<n>We quantify performance of Doppler cooling from beyond the Lamb-Dicke regime (LDR), and ground-state (GS) cooling using electromagnetically induced transparency (EIT)<n>Our results indicate potential for simple structured light profiles to alleviate bottlenecks in laser cooling, and for scalable photonic devices to improve basic operation quality in trapped-ion systems.
  arXiv  Detail & Related papers  (2024-11-13T18:22:04Z)
• Automated Graph-Based Detection of Quantum Control Schemes: Application to Molecular Laser Cooling [1.3124513975412255]
  We propose and demonstrate an automated graph-based search approach for viable laser cooling schemes.<n>A central insight of this work is that the reinterpretation of quantum states and transitions between them as a graph can dramatically enhance the ability to identify new quantum control schemes for complex quantum systems.<n>This approach will also apply to complex atoms and, in fact, any complex many-body quantum system with a discrete spectrum of internal states.
  arXiv  Detail & Related papers  (2023-11-14T18:44:24Z)
• A superradiant two-level laser with intrinsic light force generated gain [0.0]
  We propose a new scenario for creating continuous gain by using optical forces acting on the states of a two-level atom. We study minimal conditions on pump laser intensities and detunings required for collective superradiant emission.
  arXiv  Detail & Related papers  (2023-04-25T23:10:55Z)
• On quantum free-electron laser: Superradience [91.3755431537592]
  An exact expression for the evolution of the laser amplitude is obtained. Reliable conditions for the superradiance of the high-gained laser are discussed.
  arXiv  Detail & Related papers  (2022-03-27T15:07:09Z)
• Perturbation approach in Heisenberg equations for lasers [77.34726150561087]
  It is found that fluctuations of population significantly affect spontaneous and stimulated emissions into the lasing mode. The method can be applied to various resonant systems in quantum optics.
  arXiv  Detail & Related papers  (2022-01-08T18:24:37Z)
• Dual-laser self-injection locking to an integrated microresonator [93.17495788476688]
  We experimentally demonstrate the dual-laser SIL of two multifrequency laser diodes to different modes of an integrated Si$_3$N$_4$ microresonator. Locking both lasers to the same mode results in a simultaneous frequency and phase stabilization and coherent addition of their outputs.
  arXiv  Detail & Related papers  (2022-01-06T16:25:15Z)
• Far-Infrared frequency mode conversion using bulk acoustic phonon modes [0.0]
  We propose an unconventional system comprising of a bulk quartz crystal placed within a Fabry-Perot cavity. We explore the possibility of efficient mode conversion between two optical modes supported by the system. The novel results found in our study can be used to harness the dark state for quantum state transfer.
  arXiv  Detail & Related papers  (2021-12-13T07:56:56Z)
• A low-loss ferrite circulator as a tunable chiral quantum system [108.66477491099887]
  We demonstrate a low-loss waveguide circulator constructed with single-crystalline yttrium iron garnet (YIG) in a 3D cavity. We show the coherent coupling of its chiral internal modes with integrated superconducting niobium cavities. We also probe experimentally the effective non-Hermitian dynamics of this system and its effective non-reciprocal eigenmodes.
  arXiv  Detail & Related papers  (2021-06-21T17:34:02Z)
• Mid-infrared homodyne balanced detector for quantum light characterization [52.77024349608834]
  We present the characterization of a novel balanced homodyne detector operating in the mid-infrared. We discuss the experimental results with a view to possible applications to quantum technologies, such as free-space quantum communication.
  arXiv  Detail & Related papers  (2021-03-16T11:08:50Z)
• Open-cavity in closed-cycle cryostat as a quantum optics platform [47.50219326456544]
  We present a fiber-based open Fabry-P'erot cavity in a closed-cycle cryostat exhibiting ultra-high mechanical stability. This set of results manifests open-cavity in a closed-cycle cryostat as a versatile and powerful platform for low-temperature cavity QED experiments.
  arXiv  Detail & Related papers  (2021-03-09T18:41:48Z)
• Laser threshold magnetometry using green light absorption by diamond nitrogen vacancies in an external cavity laser [52.77024349608834]
  Nitrogen vacancy (NV) centers in diamond have attracted considerable recent interest for use in quantum sensing. We show theoretical sensitivity to magnetic field on the pT/sqrt(Hz) level is possible using a diamond with an optimal density of NV centers.
  arXiv  Detail & Related papers  (2021-01-22T18:58:05Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.