Experimental Aspects of Quantum Computing

Dipankar Bhattacharyya, Jyotirmoy Guha

Andrea Crespi, Marco Bentivegna, Ioannis Pitsios +7 more

Summary form only given. Contrarily to the classical physics picture, according to quantum mechanics the observable properties of the objects do not yield defined values, until a measurement is performed. The measurement outcome depends indeed also on the set of observables that is being measured [1]. Such a fundamental aspect of Nature is named quantum contextuality and it has been studied in several experimental systems, including single particles [2, 3]. Interestingly, it was recently suggested that even the non-classical power of quantum computing originates from contextuality [4]. Therefore, it is highly relevant to find experimental evidence of this aspect in technological platforms that may be adopted in future quantum computing devices, such as integrated photonics [5-7]. In this work we investigate experimentally quantum contextuality of a single photon on-a-chip, employing reconfigurable photonic circuits fabricated by femtosecond laser waveguide writing [7, 8].

Hanns‐Christoph Nägerl, Dietrich G. Leibfried, Ferdinand Schmidt‐Kaler +9 more

Tarun Sanghi, Jha, RM

Philipp Hauke

Recent progress in quantum optics and quantum information has brought the long-standing dreams of quantum simulators and even quantum computers (almost) within reach.Here, we review some current theoretical pathways supporting experimental progress towards quantum simulators.In this, we focus mainly on topological aspects and numerical studies of quantum computation.

Philip L. Roe