Exponential quantum enhancement for distributed addition with local nonlinearity

  • Authors:
  • Adam Henry Marblestone;Michel Devoret

  • Affiliations:
  • Department of Applied Physics, Yale University, New Haven, USA 06520;Department of Applied Physics, Yale University, New Haven, USA 06520

  • Venue:
  • Quantum Information Processing
  • Year:
  • 2010

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Abstract

We consider classical and entanglement-assisted versions of a distributed computation scheme that computes nonlinear Boolean functions of a set of input bits supplied by separated parties. Communication between the parties is restricted to take place through a specific apparatus which enforces the constraints that all nonlinear, nonlocal classical logic is performed by a single receiver, and that all communication occurs through a limited number of one-bit channels. In the entanglement-assisted version, the number of channels required to compute a Boolean function of fixed nonlinearity can become exponentially smaller than in the classical version. We demonstrate this exponential enhancement for the problem of distributed integer addition.