Program
The workshop will open with a reception on Friday evening, and run full days on Saturday and Sunday. Attendees coming from out of the area are encouraged to stay for the full workshop and leave on Monday morning.
Asilomar Conference Grounds map.
All session are in Merrill Hall unless otherwise listed.
Friday 15 May
PRE-WORKSHOP TUTORIAL
3:00-5:00p
This pre-workshop tutorial is aimed at participants from the classical networking community, since a productive conversation among all parties requires a shared vocabulary. We will cover the basic concepts of distributed quantum information and entanglement generation, aiming to cover material likely to arise in experimentalists' and theorists' presentations, to allow classical networking experts to understand the implications of the work. Basic mathematical notation (such as kets and density matrices), energy levels of atomic systems and emission of photons, interference and the Hong-Ou-Mandel dip, and the notion of quantum state fidelity and strategies for improving it will be addressed. Students are also welcome to attend. No separate registration is required.
WELCOME RECEPTION
5:00-6:00p, Merrill Hall and Hearthside
DINNER
6:00-7:00p, Crocker Dining Hall
Saturday 16 May
BREAKFAST
7:30-9:00a
REGISTRATION
8:00-8:30a, Hearthside
SESSION 1 - Quantum Repeaters: Objectives, Definitions and Architecture
8:30-10:00a
Discussion Leader: Norbert Lütkenhaus, University of Waterloo
Speakers: Norbert Lütkenhaus; Saikat Guha, BBN Technologies, and others
The goal of this session is to lay the basics. Starting with the original Quantum Repeater work (Briegel et al), we will clarify what the goal of quantum repeaters is. We will give as an example the ability to perform Quantum Key Distribution over large distances. Recently, it has been shown that there is a hard upper bound on the achievable secret key rate, which roughly goes proportional to single photon transmittance for large distances (TGW bound). [Takeoka, Guha, Wilde] One could argue that any scheme breaking the TGW bound can be used as a modern definition of a quantum repeater, which comprises the original quantum repeater, but allows also newer architectures (see afternoon session). For other, non-QKD applications, other bounds might be used as benchmark for quantum repeater properties. Using this view of quantum repeaters, we will discuss what constitutes a quantum repeater, and what does not. (Quantum Relays, QND measurements).
BREAK
10:00-10:30a
SESSION 2 - Generations of Quantum Repeaters
10:30-12:00p
Discussion Leader: Thaddeus Ladd, HRL Laboratories, LLC
| Overview of Three Generations of Quantum Repeaters | Bill Munro Nippon Telegraph and Telephone Corporation |
| Quantum Error Correction for Quantum Repeaters | Kae Nemoto National Institute of Informatics |
| Comparison of Three Generations of Quantum Repeaters | Sreraman Muralidharan Yale University |
In this session, we will discuss the role of different forms of error management in quantum repeaters (QRs), and compare three "generations" of QRs under different experimental conditions. Quantum networks over long distances are confronted with two important types of errors: loss errors and operation errors. These can be suppressed using heralded entanglement generation, purification, and deterministic quantum error correction. Depending on how to correct loss and operation errors, QRs have been classed into three generations: (1) The first generation of QRs uses entanglement generation and purification to correct loss and operation errors, respectively. It successfully reduces the overhead in communication rate from exponential to polynomial scaling with distance. (2) The second generation of QRs replaces the entanglement purification with quantum error correction, which further reduces the overhead in communication rate from polynomial to poly-logarithmical scaling with distance. (3) Recently, the third generation of QRs has been proposed, which completely eliminates the two-way communication by using quantum error correction for both loss and operation errors, with communication rate only limited by the speed of local quantum gates. This session will discuss these classes and their resource trade-offs for multiple implementations, and invite discussion as to whether further generations are likely.
LUNCH
12:00-1:00p, Crocker Dining Hall
SESSION 3 - Quantum Repeater Architecture Under Development
1:00-3:00p
Discussion Leaders: Jungsang Kim, Duke University; Wolfgang Tittel, University of Calgary
| Challenges and Opportunities for Distributed Quantum Information Processing: Quantum Networking via Memory-Photon Entanglement | Jungsang Kim Duke University |
| Quantum Repeaters Based on Multiplexed Quantum Memories and External Photon Pair Sources |
Wolfgang Tittel Mikael Afzelius |
| Long-term Quantum Storage: Implications for Quantum Communications | Matt Sellers Australian National University |
| Two-way Communication Protocols for Distributing Entanglement | Cody Jones HRL Laboratories, LLC |
The discussions in this session will focus on concrete experimental approaches currently being pursued by various research communities around the world on quantum repeaters. Almost all of the current experimental efforts are in the very early stages, in many cases inspired by coherent quantum memory systems that interface well with photons used for information transport. We hope to discuss novel features of memoryphoton interfaces at the physical level that enable new and efficient protocols and architectures for quantum repeaters, as well as identify bottlenecks in the performance of the physical systems that must be improved to enable efficient quantum repeater realization.
BREAK
3:00-3:15p
SESSION 4 - Quantum Networks
3:15-5:00p
Discussion Leader: Rodney Van Meter, Keio University
Panelists: Chip Elliott, BBN Technologies; Joe Fitzsimons, National University of Singapore; Stephanie Barz, University of Oxford; Gabriel Durkin, NASA Ames Research Center
Our ultimate goal is to create networks of quantum repeaters that support one or more applications of interest to potential users. To achieve this goal, we must extend beyond link-level entanglement generation and end-to-end management of entanglement along a path. We must ask how topologically complex networks will behave, and adopt and adapt classical solutions where possible and innovate when necessary. We must also understand what will be required of networks by examining in detail the demands made by applications. This session will address these two major questions.
POSTER SESSION 1
| Optimized coherent quantum feedback network as squeezed-light source for continuous-variable quantum communication |
Constantin Brif Sandia National Laboratories |
| Quantum information processing in quantum memories: Advantages and Challenges |
Animesh Datta University of Warwick |
| Semiconductor-based Quantum Communication Networks | Cody Jones HRL Laboratories, LLC |
| Routing in spin-1/2 quantum networks via quantum control | Frank Langbein Cardiff University |
| Coherent spin control of nanocavity-enhanced qubit in diamond | Luozhou Li Massachusetts Institute of Technology |
| Progress towards quantum repeaters using quantum dot spin qubits | Peter McMahon Stanford University |
| Controlling small ensembles of atoms in cavity | Dieter Meschede University of Bonn |
| Quantum network exploration with a faulty sense of direction | Jaroslaw Miszczak Institute of Theoretical and Applied Informatics |
| Entanglement distillation by dissiation and continuous quantum repeaters | Christine Muschik Institute for Quantum Optics and Quantum Information |
| Fault tolerant quantum computing in a network | Naomi Nickerson Imperial College |
| Analysis of quantum network coding for realistic repeater networks | Takahiko Satoh University of Tokyo |
| Deterministic high-yield creation of nitrogen vacancy centers in diamond photonic crystal cavities and photonic elements | Tim Schröder Massachusetts Institute of Technology |
| High capacity Fibonacci protocol for quantum communication - engineering entangled states in high-dimensional Hilbert space |
Alexander Sergienko Boston University |
| A quantum repeater network based on Rydberg excitations in neutral rubidium ensembles | Neal Solmeyer U.S. Army Research Laboratory |
| Ultrafast quantum interface between a solid-state spin and a photon | Shuo Sun Institute for Research in Electronics and Applied Physics (IREAP), University of Maryland |
| An overview of quantum repeater research at NIST | Xiao Tang National Institute of Standards and Technology |
| Revealing genuine optical-path entanglement | Rob Thew University of Geneva |
| Heralded optical quantum states and their storage in optical cavities | Jun-ichi Yoshikawa University of Tokyo |
| Quantum storage of three-dimensional orbital-angular-momentum entanglement in a crystal |
Zong-Quan Zhou University of Science and Technology of China |
DINNER
6:00-7:00p, Crocker Dinning Hall
SPECIAL SESSION - US Government Labs and Funding Agencies
7:00-8:00p
POSTER SESSION 2 and Dessert Reception
8:00-9:00p
| Gradient echo quantum memory with three-level atoms | Ben Buchler Australian National University |
| Optimal Control for Quantum Repeater Technologies | Tommaso Calarco University of Ulm |
| Development of an ensemble-based, triggerable single photon source with inbuilt quantum memory |
Kate Ferguson Australian National University |
| Software-defined quantum networking |
Travis Humble |
| Temporal multiplexing toward a periodic and deterministic singlephoton source |
Fumihiro Kaneda University of Illinois at Urbana-Champaign |
| Implementation of delayed-choice decoherence suppression using weak | Jong-Chan Lee Pohang University of Science and Technology |
| Efficient long distance quantum communication | Linshu Li Yale University |
| Low noise quantum frequency conversion from Rb wavelengths to telecom O-band |
Xiao Li Joint Quantum Institute, University of Maryland |
| Tunable solid state quantum memory using rare-earth-ion-doped Nd3+:GaN crystal |
Vladimir Malinovsky U.S. Army Research Laboratory |
| Overcoming erasure errors in quantum memories with multilevel systems | Sreraman Muralidharan Yale University |
| Heterogeneous entanglement swapping | Shota Nagayama Keio University Shonan Fujisawa Campus |
| Manipulation of frequency-time correlation of narrow-band biphotons generated from a cold atomic cloud |
Kwang-Kyoon Park Pohang University of Science and Technology |
| Progress towards quantum state transfer using a micromechanical resonator cooled to dilution refrigerator temperatures |
Robert Peterson University of Colorado, Boulder |
| A barium ion trap experiment for remote entanglement and quantum networking |
James Siverns U.S. Army Research Laboratory |
| Characterization of quantum light sources | Glenn Solomon Joint Quantum Institute, University of Maryland |
| Quantum feedback network under Darboux transformations | Agung Trisetyarso Telkom University |
| Quantum internetworking | Rodney Van Meter Keio University |
| Nanophotonic quantum memory based on rare-eath-ion doped crystals | Tian Zhong California Institute of Technology |
Sunday 17 May
SESSION 1 - Quantum Repeater Components 1
8:30-10:00a
Discussion Leader: Ping Koy Lam, Australian National University
| Quantum Memories | Rainer Blatt Institute for Quantum Optics and Quantum Information, University of Innsbruck |
| Designing Functional Quantum Network Nodes with Neutral Atom Based Memory, Processing, and Communication |
Mark Saffman University of Wisconsin |
| TBA | Andrew Shields Toshiba |
| Continuous Variables | Michael Zugenmaier Niels Bohr Institute |
| Integrated Quantum Photonics | Jeremy O'Brien University of Bristol |
BREAK
10:00-10:30a
SESSION 2 - Quantum Repeaters Components 2
10:30-12:00p
Discussion Leader: Rob Thew, University of Geneva
| Superconducting Single-photon Detectors for Quantum Networking | Thomas Gerrits National Institute of Standards and Technology |
| Heralded Noiseless Amplification for Quantum Networks | Geoff Pryde Griffith University |
| Chip-based Quantum Frequency Converters Using Silicon Nanophotonics | Kartik Srinivasan National Institute of Standards and Technology |
| Quantum Dot Based Quantum Technologies | Pascale Senellart CNRS - Laboratoire de Photonique et de Nanostructures |
| Efficient and Long-lived Quantum Memory with Cold Atomic Ensembles | Xiaohui Bao University of Science and Technology of China |
LUNCH
12:00-1:00p, Crocker Dining Hall
SESSION 3 - Quantum Repeaters Technologies
1:00-2:30p
Discussion Leaders: Tracy Northup, University of Innsbruck; Qudsia Quraishi, U.S. Army Research Laboratory
| Progress Towards Quantum State Transfer Using a Micromechanical Resonator Cooled To Dilution Refrigerator Temperatures |
Bob Peterson University of Colorado, Boulder |
| Coupling Diamond NV Centers To High-Q Dielectric Microcavities | Charles Santori HP Labs |
| Quantum Memories Based On Rare-earth-doped Crystals | Mikael Afzelius University of Geneva |
| Towards Scalable Networks Of Solid State Quantum Memories In A Photonic Integrated Circuit |
Dirk Englund |
| Quantum Networks With Spin Qubits In Diamond | Andreas Reiserer Kavli Institute of Nanoscience, Delft University of Technology |
SESSION 4 - Future Challenges and Open Discussion
3:00-4:30p
Discussion Leader: Thaddeus Ladd
This session is an open, panel-moderated discussion about the future of quantum repeaters and networks. Questions for discussion include: What is needed to advance repeaters and networks as a real technology, both in terms of resources and in terms of gaps in current research efforts? Where are the major gaps, both theoretical and experimental? What are appropriate metrics to evaluate technology readiness for quantum repeaters and networks, and what are reasonable milestones? On what timescale might the community be able to reach those milestones if appropriately supported? What are the appropriate demonstrations to validate repeaters and networks or to assess their relative performance for relevant use cases? How can the community of researchers in this area better collaborate for these purposes?
WORKSHOP BANQUET
6:00-8:00p, Seascape Dining Room