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Techniques for control of quantum systems and related systems and methods

A technique of waveforms and sequencers, applied in the field of techniques for controlling quantum systems and related systems and methods

Active Publication Date: 2018-11-09
YALE UNIV
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  • 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 for control of quantum systems and related systems and methods
  • Techniques for control of quantum systems and related systems and methods
  • Techniques for control of quantum systems and related systems and methods

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Embodiment Construction

[0088] 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 timescales. 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.

[0089] 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 control of quantum mechanical systems. Some embodiments of the waveform processor may be used to control quantum systems used in quantumcomputation, such as qubits. According to some embodiments, a waveform processor may include a first sequencer configured to sequentially execute master instructions according to a defined order andoutput digital values in response to the executed master instructions, and a second sequencer coupled to the first sequencer and configured to generate analog waveforms at least in part by transforming digital waveforms according to digital values received from the first sequencer. The analog waveforms may be applied to a quantum system. In some embodiments, the waveform processor may further include a waveform analyzer configured to integrate analog waveforms received from a quantum system and output results of said integration to the first sequencer.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit under 35 U.S.C. §119(e) of U.S. Provisional Patent Application No. 62 / 294 / 966, filed February 12, 2016, entitled "QuantumComputer State Controller," which is hereby incorporated by reference in its entirety . Background technique [0003] 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 communication, a large number of fast factorizations is of great importance, and it is assumed that quantum computers can perform such fast factorization to easily decrypt communications encrypted by conventi...

Claims

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Application Information

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IPC IPC(8): G01R33/032G01N21/31G01R23/16G01R33/038H01P7/08
CPCG01R33/032G01R33/038G01R33/1284G01R23/16G06N10/00G01R33/20G06F17/14G06F9/3877G06F9/5027G06F15/16
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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