Polarization-encoded photonic quantum-to-quantum Bernoulli factory based on a quantum dot source

• URL: http://arxiv.org/abs/2410.11685v1
• Date: Tue, 15 Oct 2024 15:21:03 GMT
• Title: Polarization-encoded photonic quantum-to-quantum Bernoulli factory based on a quantum dot source
• Authors: Giovanni Rodari, Francesco Hoch, Alessia Suprano, Taira Giordani, Elena Negro, Gonzalo Carvacho, Nicolò Spagnolo, Ernesto F. Galvão, Fabio Sciarrino,
• Abstract summary: Recently proposed quantum-to-quantum Bernoulli factory schemes encode both input and output variables in qubit amplitudes. This primitive could be used as a sub-routine for more complex quantum algorithms involving Bayesian inference and Monte Carlo methods.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: A Bernoulli factory is a randomness manipulation routine that takes as input a Bernoulli random variable, outputting another Bernoulli variable whose bias is a function of the input bias. Recently proposed quantum-to-quantum Bernoulli factory schemes encode both input and output variables in qubit amplitudes. This primitive could be used as a sub-routine for more complex quantum algorithms involving Bayesian inference and Monte Carlo methods. Here, we report an experimental implementation of a polarization-encoded photonic quantum-to-quantum Bernoulli factory. We present and test three interferometric set-ups implementing the basic operations of an algebraic field (inversion, multiplication, and addition) which, chained together, allow for the implementation of a generic quantum-to-quantum Bernoulli factory. These in-bulk schemes are validated using a quantum dot-based single-photon source featuring high brightness and indistinguishability, paired with a time-to-spatial demultiplexing setup to prepare input resources of up to three single-photon states.

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