US 12,265,433 B2
Cooling high motional states in ion trap quantum computers
Jason Madjdi Amini, Takoma Park, MD (US); Kenneth Wright, Berwyn Heights, MD (US); and Kristin Marie Beck, College Park, MD (US)
Assigned to IonQ, Inc., College Park, MD (US)
Filed by IonQ, Inc., College Park, MD (US)
Filed on Jun. 24, 2021, as Appl. No. 17/357,323.
Claims priority of provisional application 63/044,233, filed on Jun. 25, 2020.
Prior Publication US 2021/0406756 A1, Dec. 30, 2021
Int. Cl. G06F 1/20 (2006.01); G06N 7/01 (2023.01); G06N 10/40 (2022.01)
CPC G06F 1/206 (2013.01) [G06N 7/01 (2023.01); G06N 10/40 (2022.01)] 20 Claims
OG exemplary drawing
 
1. A method for cooling motional states in an ion trap for quantum computers, comprising:
performing a first cooling followed by a second cooling to an ion in the ion trap to sweep population of non-zero motional states associated with a motional mode to a zero motional state;
applying a gate interaction on a red sideband;
detecting, in response to the application of the gate interaction on the red sideband, a population of non-zero motional states of the motional mode that remains after performing the first cooling followed by the second cooling; and
removing at least part of the population of non-zero motional states.