Resource-efficient linear optical quantum computation.

By Dan E. Browne, Terry Rudolph. Physical Review Letters, 2004

677 citations recorded by the source corpus.

We introduce a scheme for linear optics quantum computation, that makes no use of teleported gates, and requires stable interferometry over only the coherence length of the photons. We achieve a much greater degree of efficiency and a simpler implementation than previous proposals. We follow the "cluster state" measurement based quantum computational approach, and show how cluster states may be efficiently generated from pairs of maximally polarization entangled photons using linear optical elements. We demonstrate the universality and usefulness of generic parity measurements, as well as introducing the use of redundant encoding of qubits to enable utilization of destructive measurements--both features of use in a more general context.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/8958337d9a49765f932396aa43ceec0cfaeee565

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Citations in the corpus

Large-scale silicon quantum photonics implementing arbitrary two-qubit processing (2018, neutral): “[15] Daniel E Browne and Terry Rudolph.”
Direct generation of three-photon polarization entanglement (2014, neutral): “This task, known to be useful for applications such as quantum repeaters [16], loophole-free Bell tests [17] and optical quantum computing [18, 19], is in theory easily achieved with an appropriate three-photon state but does not work if this state is created with SPDC and outcome postselection.”
Fusion-based quantum computation (2021, background): “are connected to fusions (4) via a fusion network router (2), which can include time delays (3).”
Experimental demonstration of a heralded entanglement source (2010, neutral): “(5) will be naturally derived afterwards.”
Photon temporal modes: a complete framework for quantum information science (2015, methodology): “A general method which facilitates this for polarization qubits has been introduced by Browne and Rudolph [60], where it was referred to as Type-I fusion .”
Multiphoton entanglement and interferometry (2008, result): “By introducing two elementary linear-optical operations (the type-I/II “two-qubit fusion”), Browne and Rudolph (2005) suggested a robust scheme achieving a much greater degree of efficiency and a simpler implementation than previous proposals.”
Measurement-based quantum computation (2009, background): “Furthermore, a polarizing beam splitter provides a simple non-deterministic entangling gate for efficient cluster state generatio”
Experimental entanglement of six photons in graph states (2006, methodology): “Here, we demonstrate the experimental entanglement of six photons and engineering of multiqubit graph state”
Near-deterministic quantum teleportation and resource-efficient quantum computation using linear optics and hybrid qubits (2011, methodology): “It effectively performs |H〉〈H|〈H| ± |V 〉〈V |〈V | with a success probability 1/2 when only one photon is detected at either detectors [10].”
Simplifying quantum logic using higher-dimensional Hilbert spaces (2009, background): “…technique is fundamentally different from and potentially complementary to the numerous linear optics schemes for reducing the overhead associated with generating a universal resource 34–36 ; here, we are concerned with reducing the amount of that resource required to build circuits.”
Preparation and storage of frequency-uncorrelated entangled photons from cavity-enhanced spontaneous parametric downconversion (2011, methodology): “The scheme was later dramatically improved by Browne and colleagues, who proposed a resource-efficient protocol for the experimental implementation of LOQ”
Almost-linear time decoding algorithm for topological codes (2017, background): “This noise model is particularly relevant for photonic measurement based quantum computing [13, 41, 43, 49], where qubit erasure is likely to be a dominant source of error.”