Quantum computing with neutral atoms

  title={Quantum computing with neutral atoms},
  author={Loic Henriet and Lucas B{\'e}guin and Adrien Signoles and Thierry Lahaye and Antoine Browaeys and Georges Reymond and Christophe Jurczak},
The manipulation of neutral atoms by light is at the heart of countless scientific discoveries in the field of quantum physics in the last three decades. The level of control that has been achieved at the single particle level within arrays of optical traps, while preserving the fundamental properties of quantum matter (coherence, entanglement, superposition), makes these technologies prime candidates to implement disruptive computation paradigms. In this paper, we review the main… 

Solving optimization problems with Rydberg analog quantum computers: Realistic requirements for quantum advantage using noisy simulation and classical benchmarks

Quantitative requirements on the system sizes and noise levels that Rydberg platforms must fulfill to reach quantum advantage in approximately solving the Unit-Disk Maximum Independent Set problem are computed.

Practical quantum advantage in quantum simulation.

The development of quantum computing across several technologies and platforms has reached the point of having an advantage over classical computers for an artificial problem, a point known as

In situ equalization of single-atom loading in large-scale optical tweezer arrays

We report on the realization of large assembled arrays of more than 300 single 87 Rb atoms trapped in optical tweezers in a cryogenic environment at ∼ 4 K. For arrays with N a = 324 atoms, the

Quantum-brachistochrone approach to the conversion from W to Greenberger-Horne-Zeilinger states for Rydberg-atom qubits

Using the quantum-brachistochrone formalism, we address the problem of finding the fastest possible (time-optimal) deterministic conversion between W and Greenberger-Horne-Zeilinger (GHZ) states in a

Optical tweezers for a bottom-up assembly of few-atom systems

ABSTRACT Tightly focused laser beams form optical tweezers that can hold and manipulate individual atoms. They give superb control over microscopic quantum systems and have paved the way for bottom

Magneto-optical trapping of a group-iii atom

We realize the first magneto-optical trap of an atom in main group III of the Periodic Table. Our atom of choice (indium) does not have a transition out of its ground state suitable for laser cooling;

Effective nonlocal parity-dependent couplings in qubit chains

For the efficient implementation of quantum algorithms, practical ways to generate many-body entanglement are a basic requirement. Specifically, coupling multiple qubit pairs at once can be advantageous



A quantum gate between a flying optical photon and a single trapped atom

The development of a robust two-qubit gate that allows the linking of distant computational nodes is “a pressing challenge” and here it is demonstrated between the spin state of a single trapped atom and the polarization state of an optical photon contained in a faint laser pulse.

Synthetic three-dimensional atomic structures assembled atom by atom

The assembly of defect-free, arbitrarily shaped three-dimensional arrays, containing up to 72 single atoms are reported, presenting the prospect of quantum simulation with tens of qubits arbitrarily arranged in space and showing that realizing systems of hundreds of individually controlled qubits is within reach using current technology.

Quantum Algorithms for Quantum Chemistry and Quantum Materials Science.

In this review, a detailed snapshot of current progress in quantum algorithms for ground-state, dynamics, and thermal-state simulation is taken and their strengths and weaknesses for future developments are analyzed.

Superconducting Qubits: Current State of Play

Several of the recent experimental advances in qubit hardware, gate implementations, readout capabilities, early NISQ algorithm implementations, and quantum error correction using superconducting qubits are discussed.

Parallel Implementation of High-Fidelity Multiqubit Gates with Neutral Atoms.

The controlled-phase gate is realized, enacted by a novel, fast protocol involving only global coupling of two qubits to Rydberg states, and a proof-of-principle implementation of the three-qubit Toffoli gate, in which two control atoms simultaneously constrain the behavior of one target atom.

A coherent quantum annealer with Rydberg atoms

Combining the well-developed quantum simulation toolbox for Rydberg atoms with the recently proposed Lechner-Hauke-Zoller (LHZ) architecture allows one to build a prototype for a coherent adiabatic quantum computer with all-to-all Ising interactions and, therefore, a platform for quantum annealing.

Probing many-body dynamics on a 51-atom quantum simulator

This work demonstrates a method for creating controlled many-body quantum matter that combines deterministically prepared, reconfigurable arrays of individually trapped cold atoms with strong, coherent interactions enabled by excitation to Rydberg states, and realizes a programmable Ising-type quantum spin model with tunable interactions and system sizes of up to 51 qubits.

Self-verifying variational quantum simulation of lattice models

Experiments are presented that demonstrate self-verifying, hybrid, variational quantum simulation of lattice models in condensed matter and high-energy physics, enabling the study of a wide variety of previously intractable target models.

A quantum annealing architecture with all-to-all connectivity from local interactions

This work presents a scalable architecture with full connectivity, which can be implemented with local interactions only, and can be understood as a lattice gauge theory, where long-range interactions are mediated by gauge constraints.

Electromagnetically Induced Transparency

  • S. Harris
  • Physics
    QELS '97., Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference
  • 1997
Electromagnetically induced transparency (EIT) is a technique for making an otherwise optically-thick medium transparent to laser radiation.’ The basic idea is to use two lasers or electromagnetic