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We observe and comprehend the dynamical Coulomb blockade suppression of the electrical conductance across an electronic quantum channel submitted to a temperature difference. A broadly tunable, spin-polarized Ga(Al)As quantum channel is…

Mesoscale and Nanoscale Physics · Physics 2021-05-26 H. Duprez , F. Pierre , E. Sivre , A. Aassime , F. D. Parmentier , A. Cavanna , A. Ouerghi , U. Gennser , I. Safi , C. Mora , A. Anthore

Polar polyatomic molecules provide an ideal but largely unexplored platform to encode qubits in rotational states. Here, we trap cold (100-600 mK) formaldehyde (H$_2$CO) inside an electric box and perform a Ramsey-type experiment to observe…

Atomic Physics · Physics 2025-04-01 Maximilian Löw , Martin Ibrügger , Gerhard Rempe , Martin Zeppenfeld

In the paper the dynamic localization of charged particle (electron) in a quantum wire under the external non-uniform time-dependent electric field is considered. The electrons are trapped in a deep 'dynamic' quantum wells which are the…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Igor Tralle

Electrons floating on the surface of liquid helium are possible qubits for quantum information processing. Varying electric potentials do not modify spin states, which allows their transport on helium using a charge-coupled device…

Other Condensed Matter · Physics 2009-11-11 G. Sabouret , S. A. Lyon

In recent years, constant applied potential molecular dynamics has allowed to study the structure and dynamics of the electrochemical double-layer of a large variety of nanoscale capacitors. Nevertheless it remained impossible to simulate…

Materials Science · Physics 2021-09-03 Thomas Dufils , Michiel Sprik , Mathieu Salanne

We demonstrate a scheme for magneto-optically trapping strontium monofluoride (SrF) molecules at temperatures one order of magnitude lower and phase space densities three orders of magnitude higher than obtained previously with laser-cooled…

Atomic Physics · Physics 2016-02-17 E. B. Norrgard , D. J. McCarron , M. H. Steinecker , M. R. Tarbutt , D. DeMille

Magnetic traps for cold atoms have become a powerful tool of cold atom physics and condense matter research. The traps on superconducting chips allow one to increase the trapped atom life- and coherence time by decreasing the thermal noise…

Superconductivity · Physics 2015-06-19 Vladimir Sokolovsky , Leonid Prigozhin , John W. Barrett

Quantum vacuum forces dictate the interaction between individual atoms and dielectric surfaces at nanoscale distances. For example, their large strengths typically overwhelm externally applied forces, which makes it challenging to…

Quantum Physics · Physics 2015-06-17 D. E. Chang , K. Sinha , J. M. Taylor , H. J. Kimble

Three terminal single-electron transistor devices utilizing Al/Al2O3 gate electrodes were developed for the study of electron transport through individual single-molecule magnets. The devices were patterned via multiple layers of optical…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 J. J. Henderson , C. M. Ramsey , E. del Barco , A. Mishra , G. Christou

Arrays of individual atoms trapped in optical microtraps with micrometer-scale sizes have emerged as a fundamental, versatile, and powerful platform for quantum sciences and technologies. This platform enables the bottom-up engineering of…

Quantum Gases · Physics 2024-01-10 Shangguo Zhu , Yun Long , Wei Gou , Mingbo Pu , Xiangang Luo

We show how one can measure the signal from slow jumps of a single molecule between metastable positions using a setup where the molecule is fixed to one lead, and one of the coupling strengths is controlled externally. Such a measurement…

Mesoscale and Nanoscale Physics · Physics 2013-04-04 Tero T. Heikkila , Wolfgang Belzig

We report on the design, fabrication, and preliminary testing of a 150 zone array built in a `surface-electrode' geometry microfabricated on a single substrate. We demonstrate transport of atomic ions between legs of a `Y'-type junction and…

Free-standing Bi$_2$Se$_3$ single crystal flakes of variable thickness are grown using a catalyst-free vapor-solid synthesis and are subsequently transferred onto a clean Si$^{++}$/SiO$_2$ substrate where the flakes are contacted in Hall…

Mesoscale and Nanoscale Physics · Physics 2015-08-19 R. Ockelmann , A. Müller , J. H. Hwang , S. Jafarpisheh , Drögeler , B. Beschoten , C. Stampfer

Single ions held in linear Paul traps are promising candidates for a future quantum computer. Here, we discuss a two-layer microstructured segmented linear ion trap. The radial and axial potentials are obtained from numeric field…

Quantum Physics · Physics 2009-11-13 Stephan Schulz , Ulrich Poschinger , Kilian Singer , Ferdinand Schmidt-Kaler

Three dimensional electrodynamic trapping of neutral atoms has been demonstrated. By applying time-varying inhomogeneous electric fields with micron-sized electrodes, nearly $10^2$ strontium atoms in the $^1S_0$ state have been trapped with…

Atomic Physics · Physics 2009-11-11 T. Kishimoto , H. Hachisu , J. Fujiki , K. Nagato , M. Yasuda , H. Katori

Custom-designed colloidal particles in an optical tweezers act as light-mills in a fluid. In particular, aqueous suspensions of capped colloids, in which half of the surface is covered with metal layers, are investigated. Due to their…

Soft Condensed Matter · Physics 2009-11-11 F. S. Merkt , A. Erbe , P. Leiderer

Electrons bound to the surface of liquid helium are an emerging quantum computing platform, offering the potential for highly mobile spin qubits that can be manipulated using CMOS-fabricated devices. Here, as a step toward realizing this…

Mesoscale and Nanoscale Physics · Physics 2025-11-21 K. E. Castoria , H. Byeon , N. R. Beysengulov , E. O. Glen , M. Sammon , J. Pollanen , D. G. Rees , S. A. Lyon

Cold and ultracold polar molecules with nonzero electronic angular momentum are of great interest for studies in quantum chemistry and control, investigations of novel quantum systems, and precision measurement. However, in mixed electric…

Atomic Physics · Physics 2015-05-30 Benjamin K. Stuhl , Mark Yeo , Brian C. Sawyer , Matt Hummon , Jun Ye

We derive an explicit expression for the quantum conductivity of a molecular wire containing a redox center, which is embedded in an electrochemical environment. The redox center interacts with the solvent, and the average over the solvent…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 A. V. B. Cruz , A. K. Mishra , W. Schmickler

We trap neutral ground-state rubidium atoms in a macroscopic trap based on purely electric fields. For this, three electrostatic field configurations are alternated in a periodic manner. The rubidium is precooled in a magneto-optical trap,…

Atomic Physics · Physics 2011-11-10 T. Rieger , P. Windpassinger , S. A. Rangwala , G. Rempe , P. W. H. Pinkse