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This is an old revision of this page, as edited by 131.188.3.20 (talk) at 23:51, 22 January 2011 (→‎1. List of Topics that I am recently interested in:). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

1. List of Topics that I am recently interested in:

Jin Group at JILA Rudi Grimm Gourp at Innusbruck Cheng Chin Group at Chicago Ketterle Group at MIT

2. Research project

2.1 Optomechanics: MIM setup

  • Mechanical Cooling

Quantum Ground state:k_BT<\hbar \omega_M (or hv), For T=50mK,w_M=1GHz, the mechanical oscillator automatically in the ground state, where k_B=1.38*10^-23,h=6.63*10^-34 

  C.Fabre_PRA1994 Quantum-noise reduction using a cavity with a movable mirror
  A.Heidmann_APB1997 Quantum nondemolition measurement by optomechanical coupling

2.2 QIP in Rydberg atomic qubits

Talk by M.Saffman, Rydberg Blockade Mediated Quantum Computing with Neutral Atoms Talk by H.P.Buechler:Many-body physics in Rydberg atoms

  • Multiqubit quantum phase gate Journal: HZWu_PRA2010
  • Two-Qubit quantum SWAP gate
  • Geometric phase gate via stimulate Raman adiabatic passage (STIRAP)

2.3 Optomechanical Photonic Crystal

2.4 Superconducting QED

  • Quantum fluctuation in Electrical Circuits - MHD 1997.pdf

3. Collaborators

4. Literature

5. Seminar

6. Resource

[Numerical simulation]

[Physics]

[Programing]

[MAC]

1. Print the PowerPoint presentation as PDF. 2. Download the freeware "PDF to Keynote" at http://www.macupdate.com/info.php/id/21623 3. Use the freeware to convert the PDF into a read-only Keynote. Choose the resolution that match the resolution of your screen (or projector). 4. That's it! You'll now be able to read your presentation on any Mac with Keynote and best of all, you can control it with the Apple Remote!!

[Latex + Bibliography]

（Use the link ftp://ftp.lyx.org/pub/lyx/contrib/BaKoMa4LyX-1.1.zip to download the BaKoMa fonts. Unpack the zip archive to a temporary directory somewhere. Now run the Windows font applet from the Control Panel, and use it to install the eight BaKoMa fonts. Cover the original fonts in C:\Program Files\LyX16\Resources\fonts. After they're installed, you can erase the temp directory - but you might want to hang onto the zip file, in case you need to reinstall them. Restart LyX and math fonts should work.）

[Plot]

(Note: Export the picture as PNG file to get the background free figure)

[Books]

[Adminstration]

[Useful Tools]

[Maths]

(colormap analogy to palette in Yorick) —Preceding unsigned comment added by 131.188.3.21 (talk) 22:22, 29 December 2010 (UTC)[reply]

7. Entertainment and talks of the world

Remarks

Quantum Computer Criteria

Divincenzo criteria qu-ph/0002077 1. A scalable physical system with well characterized qubits

2. The ability to initialize the state of the qubits to a simple fiducial state, such as |000...i

3. Long relevant decoherence times, much longer than the gate operation time

4. A “universal” set of quantum gates

5. A qubit-specific measurement capability


New Features.Quantum computers Nature 2010

Scalability. The computer must operate in a Hilbert space whose dimensions can grow exponentially without an exponential cost in resources (such as time, space or energy).

Universal logic: The large Hilbert space must be accessible using a finite set of control operations; the resources for this set must also not grow exponentially. (Adiabatic or Cluster quantum computation)

Correctability. It must be possible to extract the entropy of the computer to maintain the computer’s quantum state.

Numerical Simulation of Lindblad master equation

1. d\ro/dt = L\ro, super-operator to find steady solution, N by N superoperator matrix times N by 1 density vector

2. d\ro =L \ro dt, integral over \ro with respect to time, rewrite all the operator in state subspace 3. Gaussian state, it is more convenient to calculate the correlation <xp> and <px>, <x^2> and <P^2>, using the method from Florian. Think about the time consumption

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