Speeding up quantum measurement using space-time trade-off
- URL: http://arxiv.org/abs/2407.17342v1
- Date: Wed, 24 Jul 2024 15:09:35 GMT
- Title: Speeding up quantum measurement using space-time trade-off
- Authors: C. Corlett, I. Čepaitė, A. J. Daley, C. Gustiani, G. Pelegrí, J. D. Pritchard, N. Linden, P. Skrzypczyk,
- Abstract summary: The scheme builds on previous protocols that entangle the system to be measured with ancillary systems.
In the idealised situation of perfect entangling operations and no decoherence, it gives an exact space-time trade-off.
We verify this scheme is robust against experimental imperfections through numerical modelling of gate noise and readout errors.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We present a scheme for speeding up quantum measurement. The scheme builds on previous protocols that entangle the system to be measured with ancillary systems. In the idealised situation of perfect entangling operations and no decoherence, it gives an exact space-time trade-off meaning the readout time reduces linearly with the number of ancilla. We verify this scheme is robust against experimental imperfections through numerical modelling of gate noise and readout errors, and under certain circumstances our scheme can even lead to better than linear improvement in the speed of measurement with the number of systems measured. This hardware-agnostic approach is broadly applicable to a range of quantum technology platforms and offers a route to accelerate mid-circuit measurement as required for effective quantum error correction.
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