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Welcome Important Dates Agenda Confirmed Speakers Conference Site and Hotel Information Registration (and meal options) Abstract Submission and Session Selection Poster Presentation Request Speaking Guidelines Transportation Cancellations |
Coherence in Superconducting Qubits
Westin San Diego, Gaslamp Quarter, April 25-28, 2010
AGENDA (revised March 2, 2010)
Day 1, Sunday, April 25, 2010
Time |
| 1700-1900 | Registration |
Day 2, Monday, April 26, 2010
Time |
| 0700-0745 | Registration and Breakfast |
| 0745-0800 | Opening Remarks |
Topical Session -- 1. JJ Qubit Context for Coherence
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| 0800-0900 | 1a. Qubit performance targets: coherence, readout-fidelity and gate-fidelity requirements for complex algorithms.
INVITED SPEAKER - quantify required qubit coherence to demonstrate algorithms based on review of currently sensible architectures and highlight competitive advantages and disadvantages of JJ qubit types.
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| 0900-0930 | 1b. Algorithms and Experiments
INVITED SPEAKER - review of recent JJ algorithms developments and demonstrations of elements (gates, entanglement, Bell-Inequalities...)
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| 0930-1000 | Break |
Topical Session -- 2. Fidelity
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| 1000-1030 | 2a. Gate fidelity of single and coupled qubits.
INVITED SPEAKER - review extant experiments measuring qubit gate performance using quantum state and process tomography.
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| 1030-1200 | 2b. Measurement Physics & Procedure
Speakers elucidate measurement physics, procedure and experiments employed to characterize and advance fidelity of measurement. Speakers will describe fundamental and observed limits of measurement fidelity from tunneling or dispersive readout, and relevant advances.
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| 1200-1330 | Lunch |
| 1330-1430 | 2c. Electronics
Speakers describe present and future electronics systems for state manipulation and measurement; performance, limitations, cost, on-chip vs. off…
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Topical Session -- 3. Coherence
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| 1430-1500 | 3a. T1, T2 and T2*
Speakers describe how they accomplished notable T1 and T2 times; including best and typical results, and how qubits have been designed and fabricated to optimize performance. Speakers will report observable mechanisms limiting their coherence times, including experimental characterization and corroboration. (Detailed theory or models of physical decoherence sources and mechanisms should be presented in session 3b.)
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| 1500-1530 | Break |
| 1530-1630 | 3a. T1, T2 and T2* continued…
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| 1630-1730 | 3a. T1, T2 and T2*
INVITED SPEAKER
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| 1730 | Adjourn Day 2 |
Day 3, Tuesday, April 27, 2010
Time |
| 0700-0745 | Breakfast |
| 0745-0800 | Opening Remarks |
| 0800-0930 | 3b. Decoherence Mechanisms: Theory, Modeling and Corroborating Data
Speakers describe theory and evidence for decoherence mechanisms and causes; how they are created, how they couple to the qubit, how they exhibit presence in materials or electrical characterization and or qubit behavior, supporting data or future, critical corroborating experiments required, and how they may be eliminated.
- Environmental dissipation (from circuit leads), including radiation
- Dissipation from two-level states
- Quasiparticle generation, dissipation and dephasing
- Other dissipative mechanisms
- 1/f charge noise
- 1/f flux noise
- 1/f critical current noise
- 1/f dephasing, as measured in resonators (e.g. Caltech group)
- Other dephasing mechanisms
- Gate fidelity and speed for single and coupled qubit gates (decoherence coming from gate protocol only)
- other...
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| 0930-1000 | Break |
| 1000-1200 | ...3b continued |
| 1200-1330 | Lunch |
| 1330-1500 | ...3b continued |
| 1500-1530 | Break |
| 1330-1500 | ...3b continued |
| 1730-1930 | Poster-Session |
Day 4, Wednesday, April 28, 2010
Time |
| 0700-0745 | Breakfast |
| 0745-0800 | Opening Remarks |
| 0800-0930 | 3c. Advanced Materials and Fabrication
Speakers describe advanced materials and methods of fabrication (for superconducting metals, junctions, dielectrics...) to eliminate defect mechanisms identified above. Speakers describe incorporation into micro-fabrication processes with control and reproducibility and all supporting data (preliminary, proof-of-principle or definitive).
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| 0930-1000 | Break |
| 1000-1200 | 3c. continued ... |
| 1200-1330 | Lunch |
| 1330-1500 | 3d. Materials and defect characterization and correlation to qubit performance.
Speakers describe advanced bulk, film and interface characterization methods to quantify critical defects and metrics which are known, proposed or especially shown to correlate to qubit performance.
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| 1500-1530 | Break |
| 1530-1630 | 3d. continued ... |
| 1630-1730 | 3e. Novel architectures.
Speakers describe theoretical analysis motivating pursuit of and or experimental results with more coherent, high-performance qubit architectures. (What if fabrication was not a limitation? … 3D structures, Vacuum JJs, advanced qubit and JJ nano/micro geometries begged by physics ...)
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| 1730 | Closing Remarks and Adjourn Conference |
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