公开(公告)号：US11893452B2

公开(公告)日：2024-02-06

申请号：US17173985

申请日：2021-02-11

Applicant: ColdQuanta, Inc.

Inventor： Thomas William Noel ,  Mark Saffman ,  Matthew Ebert

IPC: G06N10/40 ,  G06N10/00

CPC classification number: G06N10/00

Abstract: In the context of gate-model quantum computing, atoms (or polyatomic molecules) are excited to respective Rydberg states to foster intra-gate interactions. Rydberg states with relatively high principal quantum numbers are used for relatively distant intra-gate interactions and require relatively great inter-gate separations to avoid error-inducing inter-gate interactions. Rydberg states with relatively low principal quantum numbers can be used for intra-gate interactions over relatively short intra-gate distances and require relatively small inter-gate separations to avoid error-inducing inter-gate interactions. The relatively small inter-gate separations provide opportunities for parallel gate executions, which, in turn, can provide for faster execution of the quantum circuit constituted by the gates. By using Rydberg states with relatively high principal quantum numbers where required, and Rydberg states with relatively low principal quantum numbers where possible, an optimal tradeoff between intra-gate interaction flexibility and inter-gate parallelism can be achieved.

公开(公告)号：US11989622B2

公开(公告)日：2024-05-21

申请号：US17506860

申请日：2021-10-21

Applicant: ColdQuanta, Inc.

Inventor： Matthew Ebert ,  Martin Tom Lichtman

IPC: G06N10/00 ,  G06F9/30 ,  G21K1/00

CPC classification number: G06N10/00 ,  G06F9/30101 ,  G21K1/006

Abstract: A quantum register can be read out using under-resolved emissions mapping (e.g., imaging). Regions of the quantum register are illuminated concurrently, one array site per region at a time, typically until all sites of each region have been illuminated. A photodetector system then detects for each region whether or not an EMR emission (e.g., due to fluorescence) has occurred in response to illumination of a respective site in that region. The result of the photo detections is a series of emissions maps, e.g., images. The number of emissions maps in the series corresponds to a number of sites per region, while the number of pixels in each image corresponds to a number of regions. A readout result can be based on a time-multiplexed combination of these emissions maps. The emissions maps are under-resolved since the resolution corresponds to the region size rather than the sizes of individual array sites.