Schnelle Multiphotonen-Quantengates für Optische Qubits und Qutrits

Details

Veröffentlichungs-Nr.

EP4742113

Anmeldetag

6. November 2024

Veröffentlichung

13. Mai 2026

Rechtsraum

EP

IPC

G06N10/40

Abstract

The present disclosure relates to a system for performing a quantum manipulation protocol, e.g., a quantum computing algorithm, the system comprising: a trapping laser system for trapping neutral atoms in an optical trap array inside a vacuum chamber operated at a trapping wavelength λ<tr>, wherein each neutral atom comprises a ground state |<1>S<o>>, a first metastable excited state |<3>P<o>> and a second metastable excited state |<3>P<2>>. The system further comprises a state manipulation laser system for generating laser radiation for coupling, via a phase-coherent multi-photon transition, the ground state |<1>S<o>> to the first metastable excited state |<3>P<o>> and / or to the second metastable excited state |<3>P<2>> as well as a magnetic field system for generating a magnetic field B<ext> at a location of the optical trap array inducing a Zeeman splitting for magnetic substates of the second metastable excited state |<3>P<2>>. The system further comprises a control system for controlling the laser radiation generated by the laser system to coherently modify a quantum state of the plurality of neutral atoms based on the quantum manipulation protocol and a a quantum state readout system for determining the quantum state of at least a subset of the plurality of neural atoms based on the quantum manipulation protocol. According to some aspects, a direction of the magnetic field B<ext> with respect to a polarization direction of the optical trap array is selected such as to render the optical trap array operated at the trapping wavelength λ<tr> a magic-wavelength optical trap for the second metastable excited state |<3>P<2>> and the first metastable excited state |<3>P<o>> and / or for the second metastable excited state |<3>P<2>> and the ground state |<1>S<o>> or both.

Anmelder

Firmen

Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V.
Ludwig-Maximilians-Universität München, in Vertretung des Freistaates Bayern

Land

🇩🇪 Deutschland