Kenneth Michael Wright

US Patent:

20230108961, Apr 6, 2023

Filed:

Jun 15, 2021

Appl. No.:

17/348042

Inventors:

- Taneytown MD, US
Gregory S. Derosier - Eldersburg MD, US
Trevor Hegg - Westminster MD, US
Sarah L. Ferrari - Mount Airy MD, US
Don Hamilton - Taneytown MD, US
Nicholas Hesser - Taneytown MD, US
Kenneth Wright - Taneytown MD, US

International Classification:

F24F 1/46
F25B 49/00
F25B 9/00
F25D 23/00
F25B 43/00
F25B 41/39
F25B 39/04
F25B 39/02
F25B 5/02

Abstract:

A packaged, pumped liquid, evaporative-condensing recirculating ammonia refrigeration system with charges of 10 lbs or less of refrigerant per ton of refrigeration capacity. The compressor and related components are situated inside the plenum of a standard evaporative condenser unit, and the evaporator is close coupled to the evaporative condenser. Single or dual phase cyclonic separators may also be housed in the plenum of the evaporative condenser.

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:

20210406756, Dec 30, 2021

Filed:

Jun 24, 2021

Appl. No.:

17/357323

Inventors:

- College Park MD, US
Kenneth WRIGHT - Berwyn Heights MD, US
Kristin Marie BECK - College Park MD, US

International Classification:

G06N 10/00
G06N 7/00

Abstract:

Aspects of the present disclosure describe techniques for cooling motional states in an ion trap for quantum computers. In an aspect, a method includes performing Doppler cooling and sideband cooling to sweep motional states associated with a motional mode to a zero motional state; applying a gate interaction on a red sideband; detecting, a population of non-zero motional states of the motional mode that remains after performing the Doppler cooling and the sideband cooling; and removing at least part of the population. In another aspect, a method includes performing a Doppler cooling; applying a gate interaction on a red sideband; detecting whether a population of non-zero motional states of the motional mode remains after performing the Doppler cooling; and redistributing the population of the non-zero motional states by Doppler cooling when a population is detected. A quantum information processing (QIP) system that performs these methods is also described.

US Patent:

20210013021, Jan 14, 2021

Filed:

Jun 23, 2020

Appl. No.:

16/909669

Inventors:

- College Park MD, US
Kenneth WRIGHT - Berwyn Heights MD, US
Jason Madjdi AMINI - Takoma Park MD, US

International Classification:

H01J 49/42
G06N 10/00

Abstract:

Aspects of the present disclosure describe techniques for mitigating charging on optical windows. For example, a device for mitigating charges inside a chamber of a trapped ion system is described that includes an array of parallel wires formed from a single, conductive plate by cutting elongated gaps through an entire thickness of the conductive plate that separate the wires, an outer portion of the conductive plate to which the wires are attached is configured to position the wires to run parallel to one or more trapped ions in the chamber and to position the wires between a dielectric component of the chamber and the one or more trapped ions. A chamber with such an array of parallel wires and a method of using such an array of parallel wires are also described.

US Patent:

20180163998, Jun 14, 2018

Filed:

Dec 12, 2017

Appl. No.:

15/839484

Inventors:

- Taneytown MD, US
Gregory S. Derosier - Eldersburg MD, US
Trevor Hegg - Westminster MD, US
Sarah L. Ferrari - Mount Airy MD, US
Don Hamilton - Taneytown MD, US
Nicholas Hesser - Taneytown MD, US
Kenneth Wright - Taneytown MD, US

International Classification:

F25B 9/00
F25B 39/04
F25B 39/02
F25B 49/00
F25D 23/00

Abstract:

A packaged, pumped liquid, evaporative-condensing recirculating ammonia refrigeration system with charges of 10 lbs or less of refrigerant per ton of refrigeration capacity. The compressor and related components are situated inside the plenum of a standard evaporative condenser unit, and the evaporator is close coupled to the evaporative condenser. Prior art large receiver vessels may be replaced with a single or dual phase cyclonic separator also housed in the plenum of the evaporative condenser.