Now showing items 1-20 of 30

    • All-Optical Switching Demonstration using Two-Photon Absorption and the Classical Zeno Effect 

      Hendrickson, S. M.; Weiler, C. N.; Camacho, R.M.; Rakich, P. T.; Young, A. I.; Shaw, M. J.; Pittman, T. B.; Franson, J. D.; Jacobs, B. C. (2018-10-31)
      Low-contrast all-optical Zeno switching has been demonstrated in a Si3N4 microdisk resonator coupled to a hot atomic vapor. The device is based on the suppression of the field build-up within a microcavity due to non-degenerate ...
    • All-optical-switching demonstration using two-photon absorption and the Zeno effect 

      Hendrickson, S. M.; Weiler, C. N.; Camacho, R. M.; Rakich, P. T.; Young, A. I.; Shaw, M. J.; Pittman, T.B.; Franson, J.D.; Jacobs, B. C. (American Physical Society (APS), 2013-02-07)
      Low-contrast all-optical Zeno switching has been demonstrated in a Si₃N₄ microdisk resonator coupled to warm atomic vapor. The device is based on the suppression of the resonant microcavity field buildup due to nondegenerate ...
    • Demonstration of feed-forward control for linear optics quantum computation 

      Pittman, T.B.; Jacobs, B. C.; Franson, J.D. (American Physical Society (APS), 2002-11-14)
      One of the main requirements in linear optics quantum computing is the ability to perform single-qubit operations that are controlled by classical information fed forward from the output of single-photon detectors. These ...
    • Demonstration of Nondeterministic Quantum Logic Operations Using Linear Optical Elements 

      Pittman, T. P.; Jacobs, B. C.; Franson, J.D. (American Physical Society (APS), 2002-06-06)
      Knill, Laflamme, and Milburn [Nature (London) 409, 46 (2001)] recently showed that nondeterministic quantum logic operations could be performed using linear optical elements, additional photons (ancilla), and postselection ...
    • Demonstration of quantum error correction using linear optics 

      Pittman, T.B.; Jacobs, B. C.; Franson, J.D. (American Physical Society (APS), 2005-05-31)
      We describe a laboratory demonstration of a quantum error correction procedure that can correct intrinsic measurement errors in linear-optics quantum gates. The procedure involves a two-qubit encoding and fast feed-forwa ...
    • Experimental controlled-NOT logic gate for single photons in the coincidence basis 

      Pittman, T. P.; Fitch, M. J.; Jacobs, B. C.; Franson, J. D. (American Physical Society (APS), 2003-09-26)
      We report a proof-of-principle demonstration of a probabilistic controlled-NOT gate for single photons. Single-photon control and target qubits were mixed with a single ancilla photon in a device constructed using only ...
    • Experimental demonstration of a quantum circuit using linear optics gates 

      Pittman, T.B.; Jacobs, B. C.; Franson, J.D. (American Physical Society (APS), 2005-03-10)
      One of the main advantages of an optical approach to quantum computing is the fact that optical fibers can be used to connect the logic and memory devices to form useful circuits, in analogy with the wires of a conventional ...
    • Experimental Quantum Encoder for Single-Photon Qubits 

      Pittman, T.B.; Jacobs, B. C.; Franson, J.D. (OSA Publishing, 2004-05)
      We describe an experiment in which linear optics, post-selection, and GHZ-like three-photon interference effects were used to probabilistically encode a single-photon qubit into the logical state of two photons.
    • Heralded two-photon entanglement from probabilistic quantum logic operations on multiple parametric down-conversion sources 

      Pittman, T.B.; Donegan, M. M.; Fitch, M. J.; Jacobs, B. C.; Franson, J.D.; Kok, P.; Lee, Hwang; Dowling, J. P. (IEEE, 2018-10-29)
      An ideal controlled-NOT gate followed by projective measurements can be used to identify specific Bell states of its two input qubits. When the input qubits are each members of independent Bell states, these projective ...
    • Heralding single photons from pulsed parametric down-conversion 

      Pittman, T.B.; Jacobs, B. C.; Franson, J.D. (Elsevier, 2004-11-23)
      We describe an experiment in which photon pairs from a pulsed parametric down-conversion source were coupled into single-mode fibers. Detecting one of the photons heralded the presence of the other photon in its fiber with ...
    • High-Fidelity Quantum Logic Operations and Entangled Ancilla States 

      Franson, J.D.; Donegan, M. M.; Fitch, M. J.; Jacobs, B. C.; Pittman, T. B. (OSA Publishing, 2003-06)
      We describe a high-fidelity approach to linear optics quantum computing in which the quantum logic operations always produce an output. A method for generating the required entangled states is also described.
    • High-Fidelity Quantum Logic Operations Using Linear Optical Elements 

      Franson, J.D.; Donegan, M. M.; Fitch, M.J.; Jacobs, B. C.; Pittman, T.B. (American Physical Society (APS), 2002-09-04)
      Knill, Laflamme, and Milburn [Nature (London) 409, 46 (2001)] have shown that quantum logic operations can be performed using linear optical elements and additional ancilla photons. Their approach is probabilistic in the ...
    • Hybrid approach for optical quantum computing 

      Franson, J.D.; Jacobs, B. C.; Pittman, T.B. (OSA Publishing, 2004)
      We describe a hybrid approach to quantum computing in which linear optical elements are used to perform the logic operations while relatively small nonlinear effects are used to avoid the need for ancilla photons.
    • Improved single-photon detector performance 

      Fitch, M.J.; Donegan, M. M.; Jacobs, B. C.; Pittman, T.B.; Franson, J.D. (OSA Publishing, 2003-06)
      High efficiency single-photon detectors are needed for many applications including quantum cryptography and linear-optics quantum computing. We present experimental results showing improved detection efficiency of silicon ...
    • Investigation of a single-photon source based on quantum interference 

      Pittman, T.B.; Franson, J.D.; Jacobs, B. C. (IOP, 2007-06-29)
      We report on an experimental investigation of a single-photon source based on a quantum interference effect first demonstrated by Koashi, Matsuoka and Hirano (1996 Phys. Rev. A 53 3621). For certain types of measurement-based ...
    • Low Power All-Optical Switching Using Two-Photon Absorption and the Zeno Effect 

      Weiler, C. N.; Hendrickson, S. M.; Camacho, R. M.; Rakich, P. T.; Young, A. I.; Shaw, M. J.; Pittman, T. B.; Franson, J.D.; Jacobs, B. C. (2012-12-10)
    • Observation of Low-Contrast All-Optical Switching in Si₃N₄ Microdisks Based on the Zeno Effect 

      Hendrickson, S. M.; Weiler, C. N.; Camacho, R. M.; Rakich, P. T.; Young, A. I.; Shaw, M. J.; Pittman, T. B.; Franson, J.D.; Jacobs, B. C. (OSA Publishing, 2012-06)
      Low-contrast all-optical Zeno switching has been demonstrated in a Silicon Nitride microdisk resonator surrounded by hot Rubidium vapor. The device is based on the suppression of the cavity field buildup due to non-degenerate ...
    • Photon-number resolution using time-multiplexed single-photon detectors 

      Fitch, M. J.; Jacobs, B. C.; Pittman, T.B.; Franson, J.D. (American Physical Society (APS), 2003-10-10)
      Photon-number-resolving detectors are needed for a variety of applications including linear-optics quantum computing. Here we describe the use of time-multiplexing techniques that allow ordinary single-photon detectors, ...
    • Probabilistic quantum encoder for single-photon qubits 

      Pittman, T.B.; Jacobs, B. C.; Franson, J.D. (American Physical Society (APS), 2004-04-14)
      We describe an experiment in which a physical qubit represented by the polarization state of a single photon was probabilistically encoded in the logical state of two photons. The experiment relied on linear optics, ...
    • Probabilistic quantum logic operations using polarizing beam splitters 

      Pittman, T. B.; Jacobs, B. C.; Franson, J. D. (American Physical Society (APS), 2001-11-16)
      It has previously been shown that probabilistic quantum logic operations may be performed using linear optical elements, additional photons (ancilla), and post-selection based on the output of single-photon detectors. Here ...