US 12,231,185 B2
Crosstalk reduction in multi-channel acousto-optic modulators
Kristin Marie Beck, Livermore, CA (US); and Vandiver Chaplin, College Park, MD (US)
Assigned to IonQ, Inc., College Park, MD (US)
Filed by IonQ, Inc., College Park, MD (US)
Filed on Aug. 14, 2023, as Appl. No. 18/449,516.
Application 18/449,516 is a continuation of application No. 17/349,457, filed on Jun. 16, 2021, granted, now 11,764,828.
Claims priority of provisional application 63/040,270, filed on Jun. 17, 2020.
Prior Publication US 2023/0403044 A1, Dec. 14, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 3/32 (2006.01); H04B 10/2575 (2013.01)
CPC H04B 3/32 (2013.01) [H04B 10/2575 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of operating an acousto-optic modulator (AOM) having a plurality of channels, the method comprising:
applying a separate radio-frequency (RF) signal to each of a portion of channels of the plurality of channels in the AOM to turn on the portion of channels, causing a combined crosstalk effect on at least one remaining channel of the plurality of channels that is not turned; and
generating and applying a correcting RF signal to each of the at least one remaining channel using at least one arbitrary waveform generator (AWG) to produce an acoustic wave that at least partially corrects for the combined crosstalk effect caused by the portion of the channels of the plurality of channels when the respective RF signal is applied thereto, such that a subsequent turning on of the portion of channels does not cause the at least one remaining channel to be unintentionally turned on.