A Qubit.

Griffith University Research Demonstrates Qubit States with Memory Advantage over Classical Computers

Synopsis: Quantum Simulator Reduces Memory Storage

In brief…

+  One way in which quantum computers outperform their more traditional cousins is by needing less memory to simulate stochastic processes. They do this by more efficiently recording how such systems evolve, which in past attempts has required a large number of parallel simulators.

Farzad Ghafari, of Griffith University in Australia, and colleagues have shrunk the required number of simulators to just one, with their demonstration of a single quantum simulator whose quantum memory uses less storage space than a classical one.

+  Using the polarization of a photon as their storage medium, the team arranged an array of optical components to manipulate the photon’s state, perform a series of measurements, and encode the result in a new photon.

+  The simulator achieved this reduced memory demand while performing with 99.3% fidelity. Though the fortune-telling coin scenario was relatively simple, the team says that the technique could also be used in more complex simulations.

Source:  APS Physics.  Christopher Crockett,  Synopsis: Quantum Simulator Reduces Memory Storage…

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