AVS Quantum Science

The Coriolis force is a significant source of systematic phase errors and dephasing in atom interferometry and is often compensated by counter-rotating the interferometry laser beam against Earth's rotation. We present a novel method for performing Coriolis force compensation for long-baseline atom interferometry, which mitigates atom-beam misalignment due to beam rotation, an effect which is magnified by the long lever arm of the baseline length. The method involves adjustment of the angle of the interferometer beam prior to a magnifying telescope, enabling the beam to pivot around a tunable position along the interferometer baseline. By tuning the initial atom kinematics and adjusting the angle with which the interferometer beam pivots about this point, we can ensure that the atoms align with the center of the beam during the atom optics laser pulses. This approach will be used in the MAGIS-100 atom interferometer and could also be applied to other long-baseline atom interferometers. An additional challenge associated with long baseline interferometry is that since long-baseline atom interferometers are often located outside of typical laboratory environments, facilities constraints may require lasers to be housed in a climate-controlled room a significant distance away from the main experiment. Nonlinear effects in optical fibers restrict the use of fiber-based transport of the high-power interferometry beam from the laser room to the experiment. We present the design of and prototype data from a laser transport system for MAGIS-100 that maintains robustness against alignment drifts despite the absence of a long fiber.

Jonah Glick

Zilin Chen

Tejas Deshpande

Yiping Wang

Tim Kovachy

Coriolis force compensation and laser beam delivery for 100-m baseline atom interferometry

科里奥利力补偿与激光束传输用于100米基线原子干涉测量

Nonclassical states of light are an essential resource for many emerging quantum technologies and applications ranging from information processing, encrypted communications, and networking to sensing, metrology, and imaging. Nonlinear optical processes in solid-state materials are widely used for generating quantum light, including single photons, entangled-photon pairs, and quadrature-squeezed states. Recent advances in nonlinear photonics have enabled the functionality of benchtop nonlinear instruments to be scaled down to a single chip without sacrificing efficiency or degrading the key performance metrics. The dramatic improvement in the size, weight, power, cost, and stability enabled by photonic integrated circuits has been essential for enabling the chip-scale generation, manipulation, and detection of quantum light at a steadily increasing degree of complexity and scale. Within the last decade, the authors have seen the progression from few-component photonic circuits operating on two photons to arrays of 18 identical heralded single-photon sources and reconfigurable devices operating with more than 650 components for multidimensional entanglement and arbitrary two-photon quantum gates. In this review, the authors summarize the history and recent key technological developments of chip-scale nonlinear quantum light generation based on integrated nonlinear photonics, recent advances in heterogeneous integrated methods, and approaches for system-level integration and demonstrated applications.

Galan Moody

Lin Chang

Trevor J. Steiner

John E. Bowers

Chip-scale nonlinear photonics for quantum light generation

芯片级非线性光子学用于量子光源生成

Initiated by the authors, this erratum is written concerning the discovery of a misplaced unitary within the software implementation of the Implementable Quantum Graph Neural Network (QGNN) of the original paper. Analyzing this mistake's impact on the results, it is shown to be negligible, meaning that the results, analysis, and conclusion of the original paper remain valid. The misplacement of this unitary is found to be negligible due to it being a redundant feature in the Implementable QGNN, in addition to the parameterized quantum circuits employed being able to learn to a moderately effective degree by themselves; though, the unitaries that correspond to graph neural network algorithmic values utilized within the Implementable QGNN are still shown to be critical to the performance capability of this quantum machine learning model.

Benjamin Collis

Saahil Patel

Daniel Koch

Laura Wessing

Paul M. Alsing

Massimiliano Cutugno

Erratum: “Physics simulation via quantum graph neural network” [AVS Quantum Sci. <b>5</b>, 023801 (2023)]

勘误：“通过量子图神经网络进行物理模拟” [AVS Quantum Sci. <b>5</b>, 023801 (2023)]

Open microcavities offer great potential for the exploration and utilization of efficient spin-photon interfaces with Purcell-enhanced quantum emitters thanks to their large spectral and spatial tunability combined with high versatility of sample integration. However, a major challenge for this platform is the sensitivity to cavity length fluctuations in the cryogenic environment, which leads to cavity resonance frequency variations and thereby a lowered averaged Purcell enhancement. This work presents a closed-cycle cryogenic fiber-based microcavity setup, which is in particular designed for a low passive vibration level, while still providing large tunability and flexibility in fiber and sample integration, and high photon collection efficiency from the cavity mode. At temperatures below 10 K, a stability level of around 25 pm is reproducibly achieved in different setup configurations, including the extension with microwave control for manipulating the spin of cavity-coupled quantum emitters, enabling a bright photonic interface with optically active qubits.

Yanik Herrmann

Julius Fischer

Stijn Scheijen

Cornelis F. J. Wolfs

Julia M. Brevoord

Colin Sauerzapf

Leonardo G. C. Wienhoven

Laurens J. Feije

Martin Eschen

Maximilian Ruf

Matthew J. Weaver

Ronald Hanson

A low-temperature tunable microcavity featuring high passive stability and microwave integration

低温可调谐微腔，具有高被动稳定性和微波集成

Self-testing has been established as a major approach for quantum device certification based on experimental statistics with minimal assumptions. However, despite more than 20 years of research effort, most of the self-testing protocols are restricted to spatial scenarios (Bell scenarios), without many temporal generalizations known. Under the scenario of sequential measurements performed on a single quantum system, semi-definite optimization-based techniques have been applied to bound sequential measurement inequalities. Building upon this formalism, we show that the optimizer matrix that saturates such sequential inequalities is unique and, moreover, this uniqueness is robust to small deviations from the quantum bound. Furthermore, we consider a generalized scenario in the presence of quantum channels and highlight analogies to the structure of Bell and sequential inequalities using the pseudo-density matrix formalism. These analogies allow us to show a practical use of maximal violations of sequential inequalities in the form of certification of quantum channels up to isometries.

Harshank Shrotriya

Leong-Chuan Kwek

Kishor Bharti

Certifying temporal correlations

认证时间相关性

The nitrogen-vacancy (NV) center in diamond is an increasingly popular quantum sensor for microscopy of electrical current, magnetization, and spins. However, efficient NV–sample integration with a robust, high-quality interface remains an outstanding challenge to realize scalable, high-throughput microscopy. In this work, we characterize a diamond micro-chip (DMC) containing a (111)-oriented NV ensemble and demonstrate its utility for high-resolution quantum microscopy. We perform strain imaging of the DMC and find minimal detrimental strain variation across a field of view of tens of micrometer. We find good ensemble NV spin coherence and optical properties in the DMC, suitable for sensitive magnetometry. We then use the DMC to demonstrate wide-field microscopy of electrical current and show that diffraction-limited quantum microscopy can be achieved. We also demonstrate the deterministic transfer of DMCs with multiple materials of interest for next-generation electronics and spintronics. Lastly, we develop a polymer-based technique for DMC placement. This work establishes the DMC's potential to expand the application of NV quantum microscopy in materials, device, geological, biomedical, and chemical sciences.

Shahidul Asif

Hang Chen

Johannes Cremer

Shantam Ravan

Jeyson Támara-Isaza

Saurabh Lamsal

Reza Ebadi

Yan Li

Ling-Jie Zhou

Cui-Zu Chang

John Q. Xiao

Amir Yacoby

Ronald L. Walsworth

Mark J. H. Ku

Diamond micro-chip for quantum microscopy

量子显微镜用金刚石微芯片

We propose a terrestrial detector for gravitational waves with frequencies between 0.3 and 5 Hz based on atom interferometry. As key elements, we discuss two symmetric matter-wave interferometers, the first one with a single loop and the second one featuring a folded triple-loop geometry. The latter eliminates the need for atomic ensembles at femtokelvin energies imposed by the Sagnac effect in other atom interferometric detectors. The folded triple-loop geometry also combines several advantages of current vertical and horizontal matter wave antennas and enhances the scalability in order to achieve a peak strain sensitivity of 2×10−21/Hz.

C. Schubert

D. Schlippert

M. Gersemann

S. Abend

E. Giese

A. Roura

W. P. Schleich

W. Ertmer

E. M. Rasel

A scalable, symmetric atom interferometer for infrasound gravitational wave detection

用于次声引力波探测的可扩展对称原子干涉仪

Abbreviation	AVS Quantum Sci.
Journal Impact	4.12
Quartiles(Global)	QUANTUM SCIENCE & TECHNOLOGY(Q2)

ISSN	2639-0213
h-index	24

Publication Information	Publisher: American Institute of Physics，Publishing cycle: ，Journal Type: journal，Open Access Journals: No
Basic data	Year of publication: 2019，Proportion of original research papers: ，Self Citation Rate:， Gold OA Rate:

AVS Quantum Science

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Coriolis force compensation and laser beam delivery for 100-m baseline atom interferometry

Chip-scale nonlinear photonics for quantum light generation

Erratum: “Physics simulation via quantum graph neural network” [AVS Quantum Sci. 5, 023801 (2023)]

A low-temperature tunable microcavity featuring high passive stability and microwave integration

Certifying temporal correlations

Erratum: “Physics simulation via quantum graph neural network” [AVS Quantum Sci. 5, 023801 (2023)]

A low-temperature tunable microcavity featuring high passive stability and microwave integration

Certifying temporal correlations

Diamond micro-chip for quantum microscopy

A scalable, symmetric atom interferometer for infrasound gravitational wave detection