17806927. DOUBLY CONTROLLED iX CIRCUIT simplified abstract (Microsoft Technology Licensing, LLC)

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DOUBLY CONTROLLED iX CIRCUIT

Organization Name

Microsoft Technology Licensing, LLC

Inventor(s)

Mathias Soeken of Montreux (CH)

Thomas Haener of Zug (CH)

Vadym Kliuchnikov of Redmond WA (US)

Martin Henri Roetteler of Woodinville WA (US)

DOUBLY CONTROLLED iX CIRCUIT - A simplified explanation of the abstract

This abstract first appeared for US patent application 17806927 titled 'DOUBLY CONTROLLED iX CIRCUIT

Simplified Explanation

The abstract describes a quantum computing device that includes a circuit called CCiX, which is capable of performing a specific operation on qubits. Here is a simplified explanation of the abstract:

  • The CCiX circuit prepares magic states in a preparation stage.
  • It receives input qubit states, including a first control qubit, a second control qubit, and a target qubit.
  • In an execution stage, the CCiX circuit performs a CCiX operation on the target qubit using local joint measurements.
  • Some of these local joint measurements are performed between the magic states and auxiliary qubits.
  • The CCiX operation also involves remote joint measurements of the input qubit states and interface qubits among the auxiliary qubits.

Potential applications of this technology:

  • Quantum computing: The CCiX circuit can be used in quantum computers to perform complex operations on qubits, which can lead to advancements in various fields such as cryptography, optimization, and simulation.
  • Error correction: The ability to perform joint measurements and manipulate qubits can help in error correction techniques, improving the reliability and accuracy of quantum computations.

Problems solved by this technology:

  • Complex operations: The CCiX circuit enables the execution of a specific operation (CCiX) on qubits, which can be challenging to achieve with traditional computing methods.
  • Quantum state preparation: The circuit can prepare magic states, which are essential for certain quantum algorithms and protocols.

Benefits of this technology:

  • Enhanced quantum computing capabilities: The CCiX circuit expands the range of operations that can be performed on qubits, increasing the potential power and versatility of quantum computers.
  • Improved error correction: The ability to perform joint measurements and manipulate qubits can help in detecting and correcting errors, leading to more reliable quantum computations.


Original Abstract Submitted

A quantum computing device including a doubly controlled iX (CCiX) circuit. The CCiX circuit may be configured to, in a preparation stage, prepare a plurality of magic states. The CCiX circuit may be further configured to receive a plurality of input qubit states including a first control qubit state, a second control qubit state, and a target qubit state. In an execution stage, the CCiX circuit may be further configured to perform a CCiX operation on the target qubit state at least in part by performing a plurality of local joint measurements. At least a subset of the plurality of local joint measurements may be performed between the plurality of magic states and a plurality of auxiliary qubits. Performing the CCiX operation may further include performing a plurality of remote joint measurements of the input qubit states and a plurality of interface qubits included among the plurality of auxiliary qubits.

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