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# Jess Riedel

Areas of Research:

## Research Interests

I am interested in decoherence, consistent histories set selection, and quantum-enhanced detection of very small momentum transfers.

## Positions Held

• IBM Research, Yorktown Heights, New York USA. Postdoctoral researcher. Collaboration with Charles Bennett. September, 2012 - September, 2014

## Awards

• Our preprint Classical Entanglement Structure in the Wavefunction of Inflationary Fluctuations" was selected for Honorable Mention in the 2017 Gravity Research Foundation essay competition.
• My paper Classical branch structure from spatial redundancy in a many-body wavefunction." was featured on the cover of Physical Review Letters, Volume 118, Issue 12 (2017).

## Recent Publications

• CJR. Classical branch structure from spatial redundancy in a many-body wavefunction.'' Physical Review Letters, 118, 120402 (2017).
• CJR. Classical branch structure from spatial redundancy in a many-body wavefunction.'' Physical Review Letters, 118, 120402 (2017).
• M. Zwolak, CJR, W. H. Zurek. Amplification, Decoherence, and the Acquisition of Information by Spin Environments.'' Scientific Reports, 6, 25277 (2016).
• CJR, Wojciech H. Zurek, and Michael Zwolak, "The Objective Past of a Quantum Universe: Redundant Records of Consistent Histories", Phys. Rev. A, 93, 032126 (2016). [arXiv: 1312.0331]
• R. Kaltenbaek et al., "Macroscopic quantum resonators (MAQRO): 2015 Update", EPJ Quantum Technology, 3, 5 (2016). [arXiv: 1503.02640]
• CJR, "Quantum Brownian motion as an iterated entanglement-breaking measurement by the environment", Phys. Rev. A 93, 012107 (2016) [arXiv: 1507.04083]
• CJR, "Decoherence from classically undetectable sources: Standard quantum limit for diffusion". Phys. Rev. A 92, 010101(R) (2015). [arXiv: 1504.03250]
• M. Zwolak, CJR, and W. Zurek, "Amplification, Redundancy, and the Quantum Chernoff Information", Phys. Rev. Lett. 112, 140406 (2014). [arXiv: 1312.5373]
• CJR, "Direct Detection of Classically Undetectable Dark Matter through Quantum Decoherence", Phys. Rev. D 88, 116005 (2013). [arXiv: 1212.3061]
• CJR, Wojciech H. Zurek, and Michael Zwolak, "The Rise and Fall of Redundancy in Decoherence and Quantum Darwinism," New J. Phys. 14, 083010 (2012). [arXiv: 1205.3197]
• CJR and Wojciech H. Zurek, "Quantum Darwinism in an Everyday Environment: Huge Redundancy in Scattered Photons," Phys. Rev. Lett. 105, 020404 (2010). [arXiv: 1001.3419]
• Elliot Nelson and CJR, "Classical Entanglement Structure in the Wavefunction of Inflationary Fluctuations", arXiv: 1704.00728 (2017).

## Seminars

• Decoherence as a way to measure extremely soft collisions with low-mass dark matter''. Theory Division, Lawrence Berkeley National Laboratory. 1 February 2017; Burke Institute for Theoretical Physics, California Institute of Technology. 28 March 2016; Pacific Institute for Theoretical Physics, University of British Columbia. 23 March 2016
• Branching of the Wavefunction of the Universe During Inflation''. Department of Physics & Astronomy, York University. 21 February 2017
• Where are the branches in a many-body wavefunction?'' Quantum Phenomena Conference: between the whole and the parts, National Quantum Information Centre, University of Gda\'nsk. 21 September 2016; Foundational Questions Institute, 5th International Conference. 19 August 2016; Department of Physics, University of Southern California. 1 April 2016; Institute for Quantum Information and Matter, California Institute of Technology. 29 March 2016
• "Negligible momentum transfers and anomalous decoherence: Dark matter detection with nanomechanical resonators?", Ecole de Physique des Houches. 10 August 2015.
• Decoherence Detection: Dark Matter to Micromechanical Resonators." Department of Physics. Yale University. 17 February 2015.
• Toward an Objective Principle for Decomposing the Wavefunction into Classical Branches." Center for Theoretical Physics, Massachusetts Institute of Technology. 5 December 2014.
• "Dephasing Channels for Overcomplete Bases." Theoretical Division, Los Alamos National Laboratory. 24 July 2014.
• "Negligible-Momentum Particle Detection through Decoherence." The MAQRO satellite consortium, University of Vienna. 1 January 2014.
• "Local Records and Global Entanglement: A Unique Multi-Partite Generalization of the Schmidt Decomposition." UCL-Paris Quantum Connection conference. Department of Physics and Astronomy / Department of Computer Science, University College London. 5 November 2013.
• "The Objective History of a Quantum Universe: Redundant Records of Consistent Histories", Quantum Physics and the Nature of Reality Conference. Internationale Akademie Traunkirchen. 23 November 2013; Stanford Institute for Theoretical Physics, Stanford University. 30 September 2013.
• "Decoherence and the Quantum Detection of Classically Undetectable Phenomena." Theoretical Division, Los Alamos National Laboratory. 20 June 2013; Decoherence and Friends conference. Institute for Quantum Computing, University of Waterloo. 23 May 2013.
• "Direct Detection of Classically Undetectable Dark Matter Through Quantum Decoherence." Department of Physics, Oregon State University. 13 January 2013; Department of Physics, University of Vienna. 21 November 2013; Stanford Institute for Theoretical Physics, Stanford University. 18 January 2013.
• "Redundancy and the Quantum-Classical Transition." Institut fur Quantenphysik, Universitat Ulm. 10 September 2013; Stanford Institute for Theoretical Physics, Stanford University. 10 May 2012.
• "Quantum Darwinism - An Everyday Environment and Future Directions." Quantum Physics and the Nature of Reality Conference. Internationale Akademie Traunkirchen. 5 July 2011.
• "Quantum Darwinism in an Everyday Environment." Quantum Coherence and Decoherence conference. Centro de Ciencias de Benasque Pedro Pascual. 14 September 2010.