Michael A Goldman

US Patent:

20230059264, Feb 23, 2023

Filed:

Aug 18, 2022

Appl. No.:

17/890864

Inventors:

- College Park MD, US
- Durham NC, US
Jason Madjdi AMINI - Takoma Park MD, US
Kenneth WRIGHT - Berwyn Heights MD, US
Neal PISENTI - Laurel MD, US
Hermann UYS - Annapolis MD, US
Ming LI - Takoma Park MD, US
Michael Lurie GOLDMAN - Annapolis MD, US
Jeremy Matthew SAGE - Acton MA, US
Kai Makoto HUDEK - Hyattsville MD, US
Yunseong NAM - North Bethesda MD, US
Nikodem GRZESIAK - Morges, CH
Reinhold BLUMEL - Middletown CT, US

International Classification:

H01J 49/42
H01J 49/00

Abstract:

The use of multiple ion chains in a single ion trap for quantum information processing (QIP) systems is described. Each chain can have its own set of laser beams with which to implement and operate quantum gates within that chain, where each chain may therefore correspond to a single quantum computing register or core. Operations can be performed in parallel across all of these chains as they can be treated independently from each other. To implement and operate quantum gates between different chains, neighboring chains are merged into a single, larger chain, in which one can perform quantum gates between any of the ions in the larger chain. The combined chains can then be separated again by another shuttling event as needed. To implement and operate quantum gates between ions which do not occupy neighboring chains, swap gates can be used via a sequence of intervening chains.

US Patent:

20230013783, Jan 19, 2023

Filed:

Jul 15, 2022

Appl. No.:

17/866198

Inventors:

- College Park MD, US
Hermann UYS - Annapolis MD, US
Michael Lurie GOLDMAN - University Park MD, US
Adam Daniel WEST - Bowie MD, US

International Classification:

G06N 10/40

Abstract:

Aspects of the present disclosure include methods and systems for modulating light sources including applying an optical beam, modulating one or more of an amplitude, a phase, or a frequency of the optical beam via an acousto-optic modulator (AOM), applying a sideband signal to a channel of an electro-optic modulator (EOM) to transform the optical beam to a carrier beam and at least two sideband beams, and providing one of the at least two sideband beams to one or more dual-space, single-species (DSSS) trapped ions of the QIP system to transition the one or more DSSS trapped ions from a first state to a second state.

US Patent:

20210263390, Aug 26, 2021

Filed:

Jan 15, 2021

Appl. No.:

17/150909

Inventors:

- College Park MD, US
Marko Cetina - College Park MD, US
Michael Goldman - Washington DC, US

International Classification:

G02F 1/33
G02F 1/11

Abstract:

Aspects of the present disclosure describe techniques for controlling coherent crosstalk errors that occur in multi-channel acousto-optic modulators (AOMs) by applying cancellation tones to reduce or eliminate the crosstalk errors. For example, a method and systems are described that include applying a first radio frequency (RF) tone to generate a first acoustic wave in a first channel of the multi-channel AOM, wherein a portion of the first acoustic wave interacts with a second channel to cause a crosstalk effect, and applying a second RF tone to generate a second acoustic wave in the second channel, wherein the second acoustic wave reduces or eliminates the crosstalk effect caused by the portion of the first acoustic wave.

US Patent:

20200028312, Jan 23, 2020

Filed:

Jul 22, 2019

Appl. No.:

16/518714

Inventors:

- College Park MD, US
Jonathan MIZRAHI - Silver Spring MD, US
Marko CETINA - Berwyn Heights MD, US
Sarah Margaret KREIKEMEIER - Washington DC, US
Michael GOLDMAN - College Park MD, US
Kristin BECK - College Park MD, US

International Classification:

H01S 3/02
H01S 3/067

Abstract:

The disclosure describes aspects of laser cavity repetition rate tuning and high-bandwidth stabilization of pulsed lasers. In one aspect, an output optical coupler is described that includes a cavity output coupler mirror, a piezoelectric actuator coupled to the cavity output coupler mirror, a locking assembly within which the cavity output coupler mirror and the piezoelectric actuator are positioned, and one or more components coupled to the locking assembly. The components are configured to provide multiple positional degrees of freedom for tuning a frequency comb spectrum of the pulsed laser (e.g., tuning a repetition rate) by adjusting at least one position of the locking assembly with the cavity output coupler mirror. A method of adjusting an output optical coupler in a pulsed laser is also described. These techniques may be used in different applications, including quantum information processing.