Hi all, Today's group meeting will be given by Borja (title abstract inline after this message). Please note that this group meeting covers confidential work in progress, so visitors are unfortunately not welcome! Also, though I originally planned to send group meeting emails the morning of, some have suggested the day before would be preferable: I will send them at 6 PM the day before going forward, but please let me know your preferences. :-) Finally, please note that there will be no group meeting next week (May 28th). Best, Ian ------------------------------------- TITLE: Microwave Boson Sampling ABSTRACT: Quantum computers are expected to be more efficient than any classical computing device by exploiting quantum mechanical properties, such as superposition and entanglement. However, before being able to outperform classical computers, quantum computers must first solve the practical issue of finding a scalable architecture. As evidence thereof, preserving the quantum nature of a many-body system, even at the level of tens of qubits, continues to pose a huge technological challenge. On the other hand, during the past few years there has been a growing interest in the so-called Boson Sampling device, an intermediate quantum machine that, though not universal for computing, would be capable of solving a classically intractable problem, namely that of sampling from the output distribution of passive linear optics networks -- a problem considered hard for situations with as few as 20 photons. However, current Boson Sampling realizations with photonic networks are not scalable, as one cannot deterministically generate single photons on demand. In this talk, I will give a brief overview of the Boson Sampling problem, and present a scalable Boson Sampling implementation with superconducting circuits. With our proposal, one should be able to perform deterministic state preparation and high-fidelity photon detection. To the best of our knowledge, this constitutes the most realistic implementation of fully scalable Boson Sampling.