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Topic Area: Quantum Information and Measurements

Displaying records 1 to 10 of 17 records.
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1. Tunable up-conversion detector for single photon and bi-photon near-infrared spectroscopic applications
Topic: Quantum Information and Measurements
Published: 4/29/2013
Authors: Oliver T Slattery, Lijun Ma, Paulina S Kuo, Yong-Su Kim, Xiao Tang
Abstract: A tunable waveguide-based frequency up-conversion detector is used for single photon level near infrared (IR) spectroscopic measurements. Applications include direct spectroscopic measurement of week near IR signals and remote bi-photon spectroscopy. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913898

2. High Frequency Characterization of Contact Resistance and Conductivity of Platinum Nanowires*
Topic: Quantum Information and Measurements
Published: 10/1/2011
Authors: Kichul Kim, Paul Rice, Thomas M Wallis, Dazhen Gu, SangHyun Lim, Atif Imtiaz, Pavel Kabos, Dejan Filipovic
Abstract: Abstract, Individual platinum (Pt) nanowires (NWs) with 100 nm and 250 nm diameters, embedded in coplanar waveguide (CPW) structures are investigated. Three approaches for characterization of their contact resistance and conductivity at high frequenc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907628

3. Measurement crosstalk between two phase qubits coupled by a coplanar waveguide
Topic: Quantum Information and Measurements
Published: 9/14/2010
Authors: Fabio Altomare, Katarina Cicak, Mika A. Sillanpaa, Michael Shane Allman, Dale Li, Adam Joseph Sirois, Joshua Strong, Jae Park, Jed Douglas Whittaker, Raymond Wiley Simmonds
Abstract: We investigate measurement crosstalk in a system with two flux-biased phase qubits coupled by a resonant coplanar waveguide cavity. After qubit measurement, the superconducting phase undergoes damped oscillations in a deep anharmonic potential produc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904964

4. Dark pulse quantum dot diode laser
Topic: Quantum Information and Measurements
Published: 6/7/2010
Authors: Mingming M. Feng, Kevin Lawrence Silverman, Richard P Mirin, Steven T Cundiff
Abstract: We describe an operating regime for passively mode-locked quantum dot diode laser where the output consists of a train of dark pulses, i.e., intensity dips on a continuous background. We show that a dark pulse train is a solution to the master equati ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907918

5. Eigenpath Traversal by Phase Randomization
Topic: Quantum Information and Measurements
Published: 9/1/2009
Authors: S. Boixo, Emanuel H Knill, Rolando Somma
Abstract: A computation in adiabatic quantum computing is achieved by traversing a path of nondegenerate eigenstates of a continuous family of Hamiltonians. We introduce a method that traverses a discretized form of the path: at each step we evolve with the i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901135

6. Non-degenerated sequential time-bin entanglement generation using periodically poled KTP waveguide
Topic: Quantum Information and Measurements
Published: 8/31/2009
Authors: Xiao Tang, Lijun Ma, Oliver T Slattery, Tiejun Chang
Abstract: We have experimentally implemented a non-degenerate sequential time-bin entangled photon-pair source using a periodically poled potassium titanyl phosphate (PPKTP) waveguide at a clock rate of 1 GHz. The wavelengths of the signal and idler are 895 an ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902703

7. Practical long-distance quantum key distribution system using decoy levels
Topic: Quantum Information and Measurements
Published: 4/30/2009
Authors: Danna Rosenberg, Charles G Peterson, Jim A Harrington, Patrick R Rice, N. Dallman, K. T Tyagi, K. P McCabe, Sae Woo Nam, Burm Baek, Robert Hadfield, Richard J Hughes, Jane E Nordholt
Abstract: Quantum key distribution (QKD) has the potential for widespread real-world applications, but no secure long-distance experiment has demonstrated the truly practical operation needed to move QKD from the laboratory to the real world due largely to lim ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=33013

8. Criteria for Exact Qudit Universality
Topic: Quantum Information and Measurements
Published: 10/1/2005
Authors: Stephen Bullock, G K Brennen, Dianne M O'Leary
Abstract: The n-qubit concurrence canonical decomposition (CCD) is a generalization of the two-qubit canonical decomposition SU(4)=[SU(2) (x) SU(2)] ? [SU(2) (x) SU(2)], where ? is the commutative group which phases the maximally entangled Bell basis. A pre ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150083

9. Enhanced Quantum State Detection Efficiency Through Quantum Information Processing
Topic: Quantum Information and Measurements
Published: 10/1/2005
Authors: T Schaetz, M D Barrett, D. Leibfried, J. Britton, J Chiaverini, W M Itano, J. D. Jost, Emanuel H Knill, C. Langer, David J Wineland
Abstract: The n-qubit concurrence canonical decomposition (CCD) is a generalization of the two-qubit canonical decomposition SU(4)=[SU(2) (x) SU(2)] ? [SU(2) (x) SU(2)], where ? is the commutative group which phases the maximally entangled Bell basis. A pre ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150087

10. Quantum Computing with Realistically Noisy Devices
Topic: Quantum Information and Measurements
Published: 10/1/2005
Author: Emanuel H Knill
Abstract: There are quantum algorithms that can efficiently simulate quantum physics, factor large numbers and estimate integrals. As a result, quantum computers can solve otherwise intractable computational problems. One of the main problems of experimental ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150020



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