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View article: Satellites promise global-scale quantum networks
Satellites promise global-scale quantum networks Open
Academia, governments, and industry around the world are on a quest to build long-distance quantum communication networks for a future quantum internet. Using air and fiber channels, quantum communication quickly faced the daunting challen…
View article: A 698 nm laser system for excitation of fluorescent quantum light sources on a CubeSat mission
A 698 nm laser system for excitation of fluorescent quantum light sources on a CubeSat mission Open
This manuscript reports on the development and qualification of an ECDL-based, fiber-coupled laser system at a wavelength of λ = 698 nm for space applications. We designed and developed the optical and mechanical configuration, along with …
View article: Controlled displacement of stored light at room temperature
Controlled displacement of stored light at room temperature Open
We report the demonstration of spatially translating a stored optical pulse at room temperature over distances exceeding one optical wavelength. By implementing an interferometric scheme, we further measure the average speed of this linear…
View article: Satellites promise global-scale quantum networks
Satellites promise global-scale quantum networks Open
Academia, governments, and industry around the world are on a quest to build long-distance quantum communication networks for a future quantum internet. Using air and fiber channels, quantum communication quickly faced the daunting challen…
View article: Controlled Displacement of Stored Light at Room Temperature
Controlled Displacement of Stored Light at Room Temperature Open
We report the demonstration of spatially translating a stored optical pulse at room temperature over distances exceeding one optical wavelength. By implementing an interferometric scheme, we further measure the average speed of this linear…
View article: Ramsey-Bordé atom interferometry with a thermal strontium beam for a compact optical clock
Ramsey-Bordé atom interferometry with a thermal strontium beam for a compact optical clock Open
Compact optical atomic clocks have become increasingly important in field applications and clock networks. Systems based on Ramsey-Bordé interferometry (RBI) with a thermal atomic beam seem promising to fill a technology gap in optical ato…
View article: INTENTAS - an entanglement-enhanced atomic sensor for microgravity
INTENTAS - an entanglement-enhanced atomic sensor for microgravity Open
The INTENTAS project aims to develop an atomic sensor utilizing entangled Bose-Einstein condensates (BECs) in a microgravity environment. This key achievement is necessary to advance the capability for measurements that benefit from both e…
View article: Stand-alone mobile quantum memory system
Stand-alone mobile quantum memory system Open
We present the implementation and performance analysis of a portable rack-mounted stand-alone warm-vapor quantum memory system that also includes the laser package, control electronics, and data-processing hardware. The optical memory is b…
View article: Proposal for a Bose–Einstein Condensate Based Test of Born's Rule Using Light–Pulse Atom Interferometry
Proposal for a Bose–Einstein Condensate Based Test of Born's Rule Using Light–Pulse Atom Interferometry Open
Light‐pulse atom interferometry with ultra‐cold quantum gases is proposed and numerically benchmarked as a platform to test the modulo‐square hypothesis of Born's rule. The interferometric protocol is based on a combination of double Bragg…
View article: Concept for motion sensing using atomic optical memories
Concept for motion sensing using atomic optical memories Open
By harnessing optical memories based on electromagnetically induced transparency in warm vapors of gaseous alkali metals and cold atomic clouds, this article presents new methods for motion sensing. The proposed scheme for velocimetry can …
View article: Standalone mobile quantum memory system
Standalone mobile quantum memory system Open
We present the implementation and performance analysis of a portable, rack-mounted standalone warm vapor quantum memory system, that also includes the laser package, control electronics and data processing hardware. The optical memory is b…
View article: Micro-integrated crossed-beam optical dipole trap system with long-term alignment stability for mobile atomic quantum technologies
Micro-integrated crossed-beam optical dipole trap system with long-term alignment stability for mobile atomic quantum technologies Open
Quantum technologies extensively use laser light for state preparation, manipulation, and readout. For field applications, these systems must be robust and compact, driving the need for miniaturized and highly stable optical setups and sys…
View article: Ramsey-Borde atom interferometry with a thermal strontium beam for a compact optical clock
Ramsey-Borde atom interferometry with a thermal strontium beam for a compact optical clock Open
Compact optical atomic clocks have become increasingly important in field applications and clock networks. Systems based on Ramsey-Borde interferometry (RBI) with a thermal atomic beam seem promising to fill a technology gap in optical ato…
View article: Proposal for a Bose-Einstein condensate based test of Born's rule using light-pulse atom interferometry
Proposal for a Bose-Einstein condensate based test of Born's rule using light-pulse atom interferometry Open
We propose and numerically benchmark light-pulse atom interferometry with ultra-cold quantum gases as a platform to test the modulo-square hypothesis of Born's rule. Our interferometric protocol is based on a combination of double Bragg an…
View article: Additively Manufactured Ceramics for Compact Quantum Technologies
Additively Manufactured Ceramics for Compact Quantum Technologies Open
Quantum technologies are advancing from fundamental research in specialized laboratories to practical applications in the field, driving the demand for robust, scalable, and reproducible system integration techniques. Ceramic components ca…
View article: INTENTAS -- An entanglement-enhanced atomic sensor for microgravity
INTENTAS -- An entanglement-enhanced atomic sensor for microgravity Open
The INTENTAS project aims to develop an atomic sensor utilizing entangled Bose-Einstein condensates (BECs) in a microgravity environment. This key achievement is necessary to advance the capability for measurements that benefit from both e…
View article: Micro-integrated crossed-beam optical dipole trap system with long-term alignment stability for mobile atomic quantum technologies
Micro-integrated crossed-beam optical dipole trap system with long-term alignment stability for mobile atomic quantum technologies Open
Quantum technologies extensively use laser light for state preparation, manipulation, and readout. For field applications, these systems must be robust and compact, driving the need for miniaturized and highly stable optical setups and sys…
View article: Time-delayed single satellite quantum repeater node for global quantum communications
Time-delayed single satellite quantum repeater node for global quantum communications Open
Global-scale quantum networking faces significant technical and scientific obstacles. Quantum repeaters (QRs) have been proposed to overcome the inherent direct transmission range limit through optical fiber. However, QRs are typically lim…
View article: Review and experimental benchmarking of machine learning algorithms for efficient optimization of cold atom experiments
Review and experimental benchmarking of machine learning algorithms for efficient optimization of cold atom experiments Open
The generation of cold atom clouds is a complex process which involves the optimization of noisy data in high dimensional parameter spaces. Optimization can be challenging both in and especially outside of the lab due to lack of time, expe…
View article: Entanglement dynamics of photon pairs and quantum memories in the gravitational field of the earth
Entanglement dynamics of photon pairs and quantum memories in the gravitational field of the earth Open
We investigate the effect of entanglement dynamics due to gravity – the basis of a mechanism of universal decoherence – for photonic states and quantum memories in Mach-Zehnder and Hong-Ou-Mandel interferometry setups in the gravitational …
View article: Additively manufactured ceramics for compact quantum technologies
Additively manufactured ceramics for compact quantum technologies Open
Quantum technologies are advancing from fundamental research in specialized laboratories to practical applications in the field, driving the demand for robust, scalable, and reproducible system integration techniques. Ceramic components ca…
View article: QUICK3$^3$ ‐ Design of a Satellite‐Based Quantum Light Source for Quantum Communication and Extended Physical Theory Tests in Space
QUICK3$^3$ ‐ Design of a Satellite‐Based Quantum Light Source for Quantum Communication and Extended Physical Theory Tests in Space Open
Modern quantum technologies have matured such that they can now be used in space applications, e.g., long‐distance quantum communication. Here, the design of a compact true single photon source is presented that can enhance the secure data…
View article: Review and experimental benchmarking of machine learning algorithms for efficient optimization of cold atom experiments
Review and experimental benchmarking of machine learning algorithms for efficient optimization of cold atom experiments Open
The generation of cold atom clouds is a complex process which involves the optimization of noisy data in high dimensional parameter spaces. Optimization can be challenging both in and especially outside of the lab due to lack of time, expe…
View article: Micro-integrated optical systems and qualification of adhesive integration technologies for cold atomic quantum sensors
Micro-integrated optical systems and qualification of adhesive integration technologies for cold atomic quantum sensors Open
Cold atom based quantum sensors require robust and miniaturized optical systems for applications on mobile platforms. A micro-integrated optical system (volume ∼25 mL) for trapping and manipulation of neutral atoms is presented. This setup…
View article: Proposal for a long-lived quantum memory using matter-wave optics with Bose-Einstein condensates in microgravity
Proposal for a long-lived quantum memory using matter-wave optics with Bose-Einstein condensates in microgravity Open
Bose-Einstein condensates are a promising platform for optical quantum memories but suffer from several decoherence mechanisms, leading to short memory lifetimes. While some of these decoherence effects can be mitigated by conventional met…
View article: Time-delayed single satellite quantum repeater node for global quantum communications
Time-delayed single satellite quantum repeater node for global quantum communications Open
Global-scale quantum networking faces significant technical and scientific obstacles. Quantum repeaters (QRs) have been proposed to overcome the inherent direct transmission range limit through optical fibre. However, QRs are typically lim…
View article: Technology roadmap for cold-atoms based quantum inertial sensor in space
Technology roadmap for cold-atoms based quantum inertial sensor in space Open
Recent developments in quantum technology have resulted in a new generation of sensors for measuring inertial quantities, such as acceleration and rotation. These sensors can exhibit unprecedented sensitivity and accuracy when operated in …
View article: QUICK$^3$ -- Design of a satellite-based quantum light source for quantum communication and extended physical theory tests in space
QUICK$^3$ -- Design of a satellite-based quantum light source for quantum communication and extended physical theory tests in space Open
Modern quantum technologies have matured such that they can now be used in space applications, e.g., long-distance quantum communication. Here, we present the design of a compact true single photon source that can enhance the secure data r…
View article: Optical atomic clock aboard an Earth-orbiting space station (OACESS): enhancing searches for physics beyond the standard model in space
Optical atomic clock aboard an Earth-orbiting space station (OACESS): enhancing searches for physics beyond the standard model in space Open
We present a concept for a high-precision optical atomic clock (OAC) operating on an Earth-orbiting space station. This pathfinder science mission will compare the space-based OAC with one or more ultra-stable terrestrial OACs to search fo…
View article: Proposal for a long-lived quantum memory using matter-wave optics with Bose-Einstein condensates in microgravity
Proposal for a long-lived quantum memory using matter-wave optics with Bose-Einstein condensates in microgravity Open
Bose-Einstein condensates are a promising platform for optical quantum memories, but suffer from several decoherence mechanisms, leading to short memory lifetimes. While some of these decoherence effects can be mitigated by conventional me…