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A scheme is proposed for engineering two-mode squeezed states of two separated cold atomic clouds positioned near the surface of a superconducting stripline resonator. Based on the coherent magnetic coupling between the atomic spins and a…

Quantum Physics · Physics 2015-05-20 Pengbo Li , Fuli Li

Scanning micro-mirror actuators are silicon-based oscillatory micro-electro-mechanical systems (MEMS). They enable laser distance measurements for automotive LIDAR applications as well as projection modules for the consumer market. For MEMS…

Mesoscale and Nanoscale Physics · Physics 2019-03-21 Ulrike Nabholz , Frank Schatz , Jan E. Mehner , Peter Degenfeld-Schonburg

In this paper, we present an all-optical method to produce shell-shaped traps for ultracold atoms in microgravity. Our scheme exploits optical double dressing of the ground state to create a short range strongly repulsive central potential…

We demonstrate trapping of a single 85Rb atom at a distance of 200 nm from the surface of a whispering-gallery-mode bottle microresonator. The atom is trapped in an optical potential, which is created by retroreflecting a red-detuned…

Quantum Physics · Physics 2021-06-16 Elisa Will , Luke Masters , Arno Rauschenbeutel , Michael Scheucher , Jürgen Volz

We demonstrate the formation of a single RbCs molecule during the merging of two optical tweezers, one containing a single Rb atom and the other a single Cs atom. Both atoms are initially predominantly in the motional ground states of their…

This communication describes the observation of a new type of dark spontaneous-force optical trap (dark SPOT) obtained without the use of a mask blocking the central part of the repumper laser beam. We observe that loading a magneto-optical…

Atomic Physics · Physics 2016-08-16 S. R. Muniz , K. M. F. Magalhães , E. A. L. Henn , L. G. Marcassa , V. S. Bagnato

Cavity quantum electrodynamics offers the possibility to observe and control the motion of few or individual atoms, enabling the realization of various quantum technological tasks such as quantum-enhanced metrology or quantum simulation of…

In regular magneto-optical trap (MOT) systems, the delivery of six circularly polarized (CP) cooling beams requires complex and bulky optical arrangements including waveplates, mirrors, retroreflectors, etc. To address such technique…

Atom matterwave interferometry requires mirror and beamsplitter pulses that are robust to inhomogeneities in field intensity, magnetic environment, atom velocity and Zeeman sub-state. Pulse shapes determined using quantum control methods…

Quantum Physics · Physics 2018-08-29 Jack Saywell , Ilya Kuprov , David Goodwin , Max Carey , Tim Freegarde

We present a mechanism for cooling atoms by a laser beam reflected from a single mirror. The cooling relies on the dipole force and thus in principle applies to arbitrary refractive particles including atoms, molecules, or dielectric…

Quantum Physics · Physics 2009-08-05 André Xuereb , Peter Horak , Tim Freegarde

The electromagnetic manipulation of isolated atoms has led to many advances in physics, from laser cooling and Bose-Einstein condensation of cold gases to the precise quantum control of individual atomic ion. Work on miniaturizing…

Quantum Physics · Physics 2015-06-26 D. Stick , W. K. Hensinger , S. Olmschenk , M. J. Madsen , K. Schwab , C. Monroe

The development of the magneto-optical trap revolutionized the fields of atomic and quantum physics by providing a simple method for the rapid production of ultracold, trapped atoms. A similar technique for producing a diverse set of dense,…

Atomic Physics · Physics 2014-04-17 Matthew T. Hummon , Mark Yeo , Benjamin K. Stuhl , Alejandra L. Collopy , Yong Xia , Jun Ye

We present experiments with Bose-Einstein condensates on a combined atom chip. The combined structure consists of a large-scale "carrier chip" and smaller "atom-optics chips", containing micron-sized elements. This allows us to work with…

Other Condensed Matter · Physics 2009-11-11 A. Guenther , M. Kemmler , S. Kraft , C. J. Vale , C. Zimmermann , J. Fortagh

Directed atomic fabrication using an aberration-corrected scanning transmission electron microscope (STEM) opens new pathways for atomic engineering of functional materials. In this approach, the electron beam is used to actively alter the…

Optomechanical pattern forming instabilities in a cloud of cold atoms lead to self-organized spatial structures of light and atoms. Here, we consider the optomechanical self-structuring of a cold atomic cloud in the presence of a phase…

Atomic Physics · Physics 2020-05-13 Giuseppe Baio , Gordon R. M. Robb , Alison M. Yao , Gian-Luca Oppo

All light has structure, but only recently it has become possible to construct highly controllable and precise potentials so that most laboratories can harness light for their specific applications. In this chapter, we review the emerging…

We present a laser beam shaping method using acousto-optic deflection of light and discuss its application to dipole trapping of ultracold atoms. By driving the acousto-optic deflector with multiple frequencies, we generate an array of…

Trapped, laser-cooled ions produce intense fluorescence. Detecting this fluorescence enables efficient measurement of quantum state of qubits based on trapped atoms. It is desirable to collect a large fraction of the photons to make the…

Quantum Physics · Physics 2015-05-30 G. Shu , C. -K. Chou , N. Kurz , M. R. Dietrich , B. B. Blinov

We demonstrate a technique for producing a cold pulsed beam of atoms by transferring a cloud of atoms trapped in a three dimensional magneto-optic trap (MOT). The MOT is loaded by heating a getter source of Rb atoms. We show that it is…

Atomic Physics · Physics 2016-08-02 Sapam Ranjita Chanu , Ketan D. Rathod , Vasant Natarajan

Magnetic resonance imaging (MRI) is a powerful technique for investigating the microscopic properties and dynamics of physical systems. In this work we demonstrate state-sensitive MRI of ultracold atoms in an optical lattice. Single-shot…