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We propose a protocol for realizing a Toffoli gate using neutral-atom qubits in optical tweezers. Two ground-state hyperfine levels of the atoms are considered as qubit states. Our method relies on the strong and long-range interactions…

量子物理 · 物理学 2025-07-04 Sinchan Snigdha Rej , Bimalendu Deb

We propose and analyze a new approach for quantum state transfer between remote spin qubits. Specifically, we demonstrate that coherent quantum coupling between remote qubits can be achieved via certain classes of random, unpolarized…

We study the dynamics of phonon-mediated qubit-qubit interactions between trapped ions in the presence of an ultracold atomic gas. By deriving and solving a master equation to describe the combined system, we show that the presence of the…

量子物理 · 物理学 2024-12-09 Lorenzo Oghittu , Arghavan Safavi-Naini , Antonio Negretti , Rene Gerritsma

Alkaline-earth-like~(AEL) atoms with two valence electrons and a nonzero nuclear spin can be excited to Rydberg state for quantum computing. Typical AEL ground states possess no hyperfine splitting, but unfortunately a GHz-scale splitting…

原子物理 · 物理学 2022-12-13 Xiao-Feng Shi

Strong interactions can amplify quantum effects such that they become important on macroscopic scales. Controlling these coherently on a single particle level is essential for the tailored preparation of strongly correlated quantum systems…

Tweezer arrays of polar molecules present new opportunities for quantum science and quantum information. However, a major challenge, especially in bialkali molecule platforms, is the fact that current measurement schemes for the internal…

量子物理 · 物理学 2026-01-15 Jeremy T. Young , Kang-Kuen Ni , Alexey V. Gorshkov

Preparing correlated quantum states is essential for emerging technologies, but remains challenging in many-body systems. Here we propose a dissipative protocol that engineers nonreciprocal, energy-selective transitions to steer dipolar…

量子物理 · 物理学 2026-04-21 Mingsheng Tian , Zhen Bi , Thomas Iadecola , Bryce Gadway

Resolved sideband cooling provides a crucial step in subrecoil cooling the trapped atoms toward their motional ground state, which is essential in atom-based quantum technologies. Here we present an enhanced dark-state sideband cooling in…

量子物理 · 物理学 2023-03-01 Chung-Hsien Wang , Yi-Cheng Wang , Chi-Chih Chen , Chun-Che Wang , H. H. Jen

We review Rydberg aggregates, assemblies of a few Rydberg atoms exhibiting energy transport through collective eigenstates, considering isolated atoms or assemblies embedded within clouds of cold ground-state atoms. We classify Rydberg…

原子物理 · 物理学 2018-02-14 S. Wüster , J. -M. Rost

Algorithmic cooling can be used to find correlated states of many-body quantum systems. It is based on quantum circuits that perform nonunitary operations, whose implementation can be challenging on near-term quantum computers. In this work…

Arrays of trapped atoms are the ideal starting point for developing registers comprising large numbers of physical qubits for storing and processing quantum information. One very promising approach involves neutral atom traps produced on…

原子物理 · 物理学 2010-10-08 S. Whitlock , R. Gerritsma , T. Fernholz , R. J. C. Spreeuw

Thermally assisted magnetic writing is an important technology utilizing temperature dependent magnetic properties to enable orientation of a magnetic data storage medium. Using an atomistic spin model we study non-equilibrium field cooled…

介观与纳米尺度物理 · 物理学 2014-09-26 R. F. L. Evans , W. J. Fan

We describe a technique that enables a strong, coherent coupling between isolated neutral atoms and mesoscopic conductors. The coupling is achieved by exciting atoms trapped above the surface of a superconducting transmission line into…

量子物理 · 物理学 2009-11-10 Anders S. Sorensen , Caspar H. van der Wal , Lilian Childress , Mikhail D. Lukin

In this work we consider a system of spinless fermions with nearest and next-to-nearest neighbor repulsive Hubbard interactions on a honeycomb lattice, and propose and analyze a realistic scheme for analog quantum simulation of this model…

强关联电子 · 物理学 2012-12-13 A. Dauphin , M. Müller , M. A. Martin-Delgado

Algorithmic cooling methods manipulate an open quantum system in order to lower its temperature below that of the environment. We show that significant cooling is achieved on an ensemble of spin-pair systems by exploiting the long-lived…

Preparing a massive mechanical resonator in a state with quantum limited motional energy provides a promising platform for studying fundamental physics with macroscopic systems and allows to realize a variety of applications, including…

量子物理 · 物理学 2023-08-08 Jingkun Guo , Jin Chang , Xiong Yao , Simon Gröblacher

Rydberg atoms with principal quantum number n >> 1 have exaggerated atomic properties including dipole-dipole interactions that scale as n^4 and radiative lifetimes that scale as n^3. It was proposed a decade ago to take advantage of these…

量子物理 · 物理学 2015-03-13 M. Saffman , T. G. Walker , K. Molmer

Holonomic quantum computing offers a promising paradigm for quantum computation due to its error resistance and the ability to perform universal quantum computations. Here, we propose a scheme for the rapid implementation of a holonomic…

量子物理 · 物理学 2024-05-24 C. F. Sun , X. Y. Chen , W. L. Mu , G. C. Wang , J. B. You , X. Q. Shao

We introduce a state-based feedback law that stabilizes quantum states or subspaces associated with extremal values of a continuously monitored observable - a problem motivated by quantum cooling tasks. We then propose an output-based…

量子物理 · 物理学 2026-03-09 Lorenzo Franceschetti , Francesco Ticozzi

We introduce a novel method to engineer sharply peaked, distance-selective interactions between neutral atoms by exploiting interaction-induced resonances within a resonantly driven Rydberg ladder system. By tuning laser parameters, a…

原子物理 · 物理学 2025-07-24 Mohammadsadegh Khazali