Method and circuit for reading quantum state

Details Method and circuit for reading quantum state Method and circuit for reading quantum state

2005-08-15

2008-10-28

Pham, Ly D (Department: 2827)

Static information storage and retrieval

Systems using particular element

Superconductive

C365S149000, C326S001000, C326S003000, C327S366000, C327S367000

Reexamination Certificate

active

07443720

ABSTRACT:
A single electron-transistor is used to read out charge states of two coupled qubits formed by two Cooper pair boxes. Detection is made about a gate voltage shift of the peak of the current that flows in the single electron transistor in accordance with the charge states. Since the current peak position varies depending on the particular charge state, all four charge states can be independently measured, or read out.

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