Quantinuum LLC

Bryce J Bjork

Patricia Lee

Dominic George Lucchetti

Gerald Chambers

Anthony Ransford

James A Walker

Caroline Figgatt

Sara Campbell

Benjamin Arkin

Daniel Thomas Stack

Michael Simonds Feig

Jonathan Sedlacek

Christopher Eugene Langer

Mark Gabriel Kokish

John Pagnucci Gaebler

Grahame Vittorini

David Lee Hayes

Methods and controllers for reading a quantum state of an atomic object and/or qubit using coherent shelving are provided. A controller causes a first beam of a first wavelength and a second beam of a second wavelength to be incident on the qubit and causes a reading beam to be incident on the qubit. The first wavelength and the second wavelength are configured to couple a state of a qubit space of the qubit to a stable state. The stable state has a lifetime that is longer than a length of time required for performing a reading operation. The first beam and the second beam are generated by at least one manipulation source operated by at least one manipulation source driver of and/or in communication with and/or controlled by the controller.

Qubit reading procedure including coherent shel ving

A controller of a quantum system identifies a phase update trigger for a quantum object of the quantum system and an interaction time. Responsive to identifying the phase update trigger, the controller determines, for between a first time and the interaction time, (a) a location/transport effect on a phase of the quantum object based on locations thereof and transport operations performed thereon, and (b) a quantum operation effect on the phase of the quantum object based on any quantum operations applied thereto. The immediately previous phase update for the quantum object occurred at the first time. Based on the location/transport effect, the quantum operation effect, and the interaction time, the controller determines an interaction time phase of the quantum object. The controller adjusts operation of a manipulation source such that a phase of a signal generated by the manipulation source corresponds to the interaction time phase at the interaction time.

Quantum computer phase tracking and correction

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Boulder, CO, United States of America

Bryce J Bjork