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Daphna G. Enzer, Ph.D.

Daphna at JPL

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Position:

Staff Physicist
Jet Propulsion Laboratory
Pasadena, CA

Past Positions:

Director's Postdoctoral Fellow
Los Alamos National Laboratories

Research Interests:

Quantum Computation

Other Interests:

Walking, talking and enjoying the small things in life.
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Publications

Dressed Coherent States of the Anharmonic Oscillator with Damping

PhD Thesis
Harvard University
Supervisor: Gerald Gabrielse
May 1996

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Refereed Publications

Characterization of light shift below 10(-15) in a cesium fountain frequency standard operated without the use of mechanical shutters

Daphna G Enzer , William M Klipstein
IEEE Trans Ultrason Ferroelectr Freq Control. Sep;53(9):1564-9 (2006)

Two-species cold atomic beam

Lundblad, Nathan and Aveline, David C. and Thompson, Robert J. and Kohel, James M. and Ramirez-Serrano, Jaime and Klipstein, William M. and Enzer, Daphna G. and Yu, Nan and Maleki, Lute
Journal of the Optical Society of America B, 21 (1). pp. 3-6 (2004)

Entangled-photon six-state quantum cryptography

Daphna G Enzer, Phillip G Hadley, Richard J Hughes, Charles G Peterson and Paul G Kwiat
New J. Phys. 4 (2002) 45
PII: S1367-2630(02)38838-4

Observation of power-law scaling for phase transitions in linear trapped ion crystals

D.G. Enzer M. M. Schauer, J. J. Gomez, M. S. Gulley, M. H. Holzscheiter, P. G. Kwiat, S. K. Lamoreaux, C. G. Peterson, V. D. Sandberg, D. Tupa, A. G. White, R. J. Hughes, D. F. V. James, 
Phys. Rev. Lett.
85, Number 12, 2466-2469 (2000)

Progress towards Sideband-Cooling Trapped Calcium Ions

M. S. Gulley, D. J. Berkeland, D.G. Enzer, J. J. Gomez, M. H. Holzscheiter, D. F. V. James, P. G. Kwiat, S. K. Lamoreaux, C. G. Peterson, V. Sandberg, M. M. Schauer, D. Tupa, R. J. Hughes.
Bull. Am. Phys. Soc. 45, 14 (2000)

Synchronization of Parametrically Excited Electrons in a Cylindrical Microwave Cavity

 L. J. Lapidus, D. Enzer, G. Gabrielse,
(in preparation)

Stochastic Phase Switching of a Parametrically Driven Electron in a Penning Trap

 L. J. Lapidus, D. Enzer, and G. Gabrielse, 
Phys. Rev. Lett.
83, 899 - 902 (1999).

1-bit memory using one electron: Parametric oscillations in a Penning trap

C. H. Tseng, D. Enzer, G. Gabrielse, and F. L. Walls, 
Phys. Rev. A
59, 2094 - 2104 (1999).

Dressed Coherent States of the Anharmonic Oscillator

D. Enzer and G. Gabrielse, 
Phys. Rev. Lett.
78, 1211 - 1215, (1997).

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Conference Abstracts

Light shift measurements in a Cesium Fountain without the use of mechanical shutters

Tjoelker, Robert L., Enzer, D. G., Klipstein, W. M. i
IEEE International Frequency Control Symposium and Precise Time Interval (PTTI) Systems and Applications Meeting
Vancouver, British Coloumbia, Canada, August 29, 2005

Performance of the PARCS testbed cesium fountain frequency standard

Enzer, Daphna G., and  Klipstein, William M.
IEEE International Ultasound, Ferroelectrices and Frequency Control 50th Anniversary
Montreal, Canada, August 24-27, 2004

Mitigation of the Light Shift in Laser Cooled Clocks Without Mechanical Shutters

W. Klipstein, D. Enzer.
Jet Propulsion Laboratory
Poster Session.
IEEE International Frequency Control Symposium
New Orleans, LA, May 30, 2002

Production and Characterization of a Dual-Species Cold Atomic Beam

Nathan Lundblad (Caltech/JPL), David Aveline, Robert Thompson, William Klipstein, James Kohel, Jaime Ramirez-Serrano, Daphna Enzer, Lute Maleki (JPL).
American Physical Society, Division of Atomic, Molecular and Optical Physics Annual Meeting.
Williamsburg, VA, May 29, 2002

Production and Characterization of a Dual-Species Cold Atomic Beam

Nathan Lundblad (Caltech/JPL), David Aveline, Robert Thompson, William Klipstein, James Kohel, Jaime Ramirez-Serrano, Daphna Enzer, Lute Maleki (JPL).
Conference on Lasers and Electrooptics/Quantum Electronics and Laser Science
Long Beach, CA, USA, May 19, 2002

Progress towards Sideband-Cooling Trapped Calcium Ions

M. S. Gulley, D. J. Berkeland, D.G. Enzer, J. J. Gomez, M. H. Holzscheiter, D. F. V. James, P. G. Kwiat, S. K. Lamoreaux, C. G. Peterson, V. Sandberg, M. M. Schauer, D. Tupa, R. J. Hughes.
Bull. Am. Phys. Soc. 45, 14 (2000)

Progress Towards Quantum Computation with Trapped Calcium Ions: Characterizing the Instability of an Ion String's Linear Configuration

D.G. Enzer, D. J. Berkeland , J. J. Gomez, M. S. Gulley, M. H. Holzscheiter, D. F. V. James, P. G. Kwiat, S. K. Lamoreaux, C. G. Peterson, V. D. Sandberg, M. M. Schauer, D. Tupa, R. J. Hughes.
Second Annual Workshop of the Southwest Quantum Information and Technology (SQuInT) Network.
Albuquerque, NM (2000).

Progress Toward Quantum Computation with Trapped Calcium Ions

 D.G. Enzer, K. W. Byun, A. J. Berglund, D. J. Berkeland, J. J. Gomez, M. S. Gulley, M. H. Holzscheiter, D. F. V. James, P. G. Kwiat, S. K. Lamoreaux, C. G. Peterson, V. D. Sandberg, M. M. Schauer, D. Tupa, A. G. White, R. J. Hughes.
Conference Program: 1999 OSA Annual Meeting/ILS-XV.
Santa Clara, CA, p. 99 (1999).

Quantum Computation with Trapped Calcium Ions

 D. Enzer, A.J. Berglund, D.J. Berkeland, J.J. Gomez, M.S. Gulley, M.H. Holzscheiter, D.F.V. James, P.G. Kwiat, S.K. Lamoreaux, C.G. Peterson, V. Sandberg, M.M. Schauer, D. Tupa, A.G. White, R.J. Hughes (Los Alamos National Laboratory).
American Physical Society Meeting.
Atlanta, GA, March 20-26, 1999.

Experimental ion trap computation at LANL

M. S. Gulley, A. J. Berglund, D. J. Berkeland, K. Y. Byun, D. Enzer, J. J. Gomez, M. H. Holzscheiter, D. F. V. James, P. G. Kwiat, S. K. Lamoreaux, C. G. Peterson, V. Sandberg, M. M. Schauer, D. Tupa, A. G. White, and R. J. Hughes.
ICOLS 99 Program: 14th International Conference on Laser Spectroscopy.
Leopold-Franzens-Universität, Innsbruck, Austria, p. P2-38 (1999).

Quantum Computation with Trapped Calcium Ions

D. Enzer, A. J. Berglund, D. J. Berkeland, J. J. Gomez, M. S. Gulley, M. H. Holzscheiter, D. F. V. James, P. G. Kwiat, S. K. Lamoreaux, C. G. Peterson, V. Sandberg, M. M. Schauer, D. Tupa, A. G. White, and R. J. Hughes.
Bull. Am. Phys. Soc. 44, 1312 (1999).

Dressed Coherent States of the Anharmonic Oscillator

D. Enzer and G. Gabrielse.
Bull. Am. Phys. Soc. 43, 1287 (1998).

Collective Behavior of Parametrically Excited Electrons in a Cylindrical Microwave Cavity

L. J. Lapidus, D. Enzer, and G. Gabrielse.
Book of Abstracts: Workshop on Non-Neutral Plasmas.
Boulder, CO (1997).

Cooling a Penning Trap to MilliKelvin Temperatures

D. Enzer, S. Peil, K. Abdullah, and G. Gabrielse.
Book of Abstracts, Nobel Symposium 91 on Trapped Charged Particles and Fundamental Physics.
Sweden (1994).

Cooling a Penning Trap to MilliKelvin Temperatures

D. Enzer, S. Peil, K. Abdullah, and G. Gabrielse.
Abstracts of Contributed Papers, Fourteenth International Conference on Atomic Physics.
Boulder, CO, p. 2J-4 (1994).

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Other Publications

Six-state protocol offers advantages for quantum cryptography

As telecommunications and information systems become commonplace in society, a more secure means of encrypting and transmitting data is required. . . ..To investigate the six-state protocol, Kwiat and his Los Alamos colleagues – Daphna Enzer (now at the Jet Propulsion Laboratory)
News Bureau, University of Illinois at Urbana-Champaign, July 11, 2002

Thwarting Eavesdroppers with Quantum Cryptography

To investigate the six-state protocol, Kwiat and his Los Alamos colleagues -- Daphna Enzer, Phillip Hadley, Richard Hughes and Charles Peterson -- created pairs of polarization-entangled photons by passing a laser pulse through two adjacent nonlinear crystals.
Photonics Spectrum, July 16, 2002

Preventing eavesdropping is discussed in papers by. . . ..D G Enzer, P G Hadley, R J Hughes, C G Paterson and P G Kwiat

A totally new system using polarisation-entangled photons, which provides a means of automatic source verification

Advances in Quantum Computation

R. J. Hughes, D. J. Berkeland,  D. Enzer, M. H. Holzscheiter, P. G. Kwiat, S. K. Lamoreaux, C. G. Peterson, M. M. Schauer, and A. G. White (P-23); J. Gomez, M. S. Gulley, V. Sandberg, and D. Tupa (P-25); A. G. Petschek (P-DO); D. F. V. James (T-4); J. M. Ettinger (NIS-8); and M. S. Neergaard (NIS-9).

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