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Techniques and related systems and methods for controlling quantum systems

A waveform and sequencer technology used in the field of control electronics

Active Publication Date: 2021-03-23
YALE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are many technical obstacles to developing a functional quantum computer

Method used

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  • Techniques and related systems and methods for controlling quantum systems
  • Techniques and related systems and methods for controlling quantum systems
  • Techniques and related systems and methods for controlling quantum systems

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Embodiment Construction

[0089] Quantum systems exhibit states that typically evolve on timescales of tens or hundreds of nanoseconds. Control of such a system can be challenging because one of two approaches must be chosen. First, experiments can be restricted to those that do not require controls that can be dynamically chosen based on the current state of the quantum system over such time scales. However, this method limits the types of experiments that can be performed. Alternatively, control systems could be developed to dynamically control quantum systems on desired timescales, which would allow extensive experimentation, but this also presents practical issues of implementation.

[0090] To dynamically control quantum systems that evolve over tens or hundreds of nanoseconds will require extremely low-latency systems that can probe the state of the quantum system and determine subsequent control steps fast enough that at subsequent steps The system does not evolve into a different state before...

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Abstract

According to some aspects, a waveform processor is provided for controlling a quantum mechanical system. Some implementations of wave processors can be used to control quantum systems, such as qubits, used in quantum computing. According to some embodiments, the waveform processor may include: a first sequencer configured to sequentially execute host instructions according to a defined order and output a digital value in response to the executed host instructions; and a second sequencer, A second sequencer is coupled to the first sequencer and configured to generate an analog waveform at least in part by transforming the digital waveform according to the digital value received from the first sequencer. Analog waveforms can be applied to quantum systems. In some embodiments, the waveform processor may further include a waveform analyzer configured to integrate the analog waveform received from the quantum system and output a result of said integration to the first sequencer.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Patent Application No. 62 / 294 / 966, filed February 12, 2016, entitled "QuantumComputer State Controller," under 35 U.S.C. §119(e), the entire contents of which are incorporated by reference This article. technical field [0003] The present application relates generally to control electronics for quantum information systems, including the implementation of quantum error correction. Background technique [0004] Quantum information processing uses quantum mechanical phenomena, such as energy quantization, superposition and entanglement, to encode and process information in ways not exploited by conventional information processing. In the mid-1990s, it was theoretically demonstrated how quantum computers could be used to execute certain algorithms much faster than conventional or "classical" computers could achieve. For example, for encryption and secure communicat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/02
CPCG01R33/032G01R33/038G01R33/1284G01R23/16G06N10/00G01R33/20G06F17/14G06F9/3877G06F9/5027G06F15/16G06N10/70G06N10/40
Inventor 尼西姆·奥费克路易吉·弗伦齐奥米歇尔·德沃雷特罗伯特·J·舍尔科普夫三世
Owner YALE UNIV
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