Inventions in Quantum Computational Foundations
Device and Method for Continuous Time Quantum Computing
Work with S. Lloyd affords today’s rate-limited q-chipsets an engineering method using pulse sequences to do meaningful computation in the NISQ (non-error corrected) regime. EU pending. PCT 11750 2021
Method and Device for Setting up Long-Range Quantum Communications Networks Represents reflections on the first practical possible portable and distributed quantum communications and networking.
Granted in the USA in 2020. U.S. Ser. No. 17/171,777
Topological Quantum Error Correction Using a Data Bus reduces the qubits required to run quantum algorithms. A reduction of 33% has already been demonstrated. The invention is based on surface codes and is agnostic regarding the quantum chipset used.
Granted in the USA and Europe in 2020. US 10,8,841 B1
Single Photon Racetrack Source
Reliable, deterministic production of trustworthy, high-quality single photons is critical to single photon-based quantum technology. For single photon-based quantum computing systems, it is well known that photon sources will be required to produce a reliable stream of photons at rates exceeding 1 GHz. This is not possible given current market technology. Photon multiplexing, where low probability sources are combined with switching networks to route successful production events to output, is a potential solution but requires extremely fast single photon switching with ultra-low loss rates. In this paper, we examine the specific properties of the switching elements and present a new design that exploits the general one-way properties of common switching elements, such as thermal pads. We can use slow-switching elements in a multiplexed source, enabling them to pump faster by introducing multiple switches to an essential, temporal multiplexing device. We model this design under multiple error channels and show the intrinsic loss rate of the optical waveguides within integrated photonic chipsets now limits that anticipated performance.
Granted in the European Union in 2020. EP 11520
System for Scalable Qubit Arrays provides a scalable quantum computing architecture, a system for cavity alignment for coupling and controlling solid-state qubits. These have long memory times, which the invention combines with the operational simplicity of linear optics.
Granted in the USA and the European Union in 2022. US 16/388,312 // EP 11216 -19170295.0
Decoder Architecture for Quantum Error Correction This core technology is a particularly efficient quantum computer data management, I/O, and error correction method. It was filed by the company Turing in 2017 and awarded in 2019. Google Inc. has acknowledged this innovation as the most challenging part of development for the control of quantum computers.
Granted in the USA w/ co-author Jonathan Lee 2017 U.S. Ser. No 10,261,848
Quantum BIOS for Reconfiguring Quantum Computing Architectures This represents system control over quantum computing systems, forming the basis of a unique Quantum Operating System for so-called spin-based quantum geometry.
Granted in the USA in 2018. U.S. Ser. No 62/659,666