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Chad Orzel "Prof. Orzel gives the impression of an everyday guy who just happens to have a vast but hidden knowledge of physics." (anonymous student evaluation comment)

The miscellaneous ramblings of a physicist at a small liberal arts college. Physics, politics, pop culture, and occasional conversations with his dog.

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Quantum Optics:

What Do You Need to Make a Quantum Computer?

What features do you need to have in a system for it to be the basis for a practical quantum computer?

Lab Visit Report: Unusual Lattices

New experiments with optical lattices that begin to explore structures beyond the simple cubic lattice.

Lab Visit Report: Four-Wave Mixing

The next lab visit experiments I want to talk about are really the epitome of what I called the "NIST Paradigm" in an earlier post. These are experiments on "four-wave mixing" done by Colin McCormick (who I TA'd in freshman...

Lab Visit Report: Cavity QED

The Orozco lab at Maryland has some clever tricks for making atoms in superpositions of two different states.

Quantum Teleportation (for Dogs)

I gave a talk at Boskone in the prime Sunday 10 am slot, on quantum teleportation. I read the opening dialogue from Chapter 8 of the book, and then did a half-hour (or so) explanation of the real physics behind...

How to Hand-Wave Quantum Phase?

Kind of a technical question, but typing it out might provide some inspiration, or failing that, somebody might have a good suggestion in the comments. Here's the issue: I'm starting on a chapter about quantum teleportation for the book, and...

Many Worlds, Many Headaches

Delayed choices, the Many-Worlds Interpretation, and why more people don't spend lots of time thinking about foundational issues in quantum mechanics.

Watching Wavefunctions Collapse

The Haroche group in Paris has found a clever way to track a wavefunction as it moves from a superposition of many states to a single definite value.

Crystal healing

Lest this blog turn into a one-trick pony, let me tell you what I did today that's of a little different flavor. I epoxied some stuff onto some other stuff. More importantly, I calculated a band structure. This amazes me....

The Life Cycle of a Microwave Photon

The French dominance of quantum optics continues with a beautiful experiment from ENS in Paris.

Spooky Action at a Distance

The Einstein Podolsky Rosen paradox, Bell's Theorem, and how we know that the world is a very weird place.

Thought Experiments Made Real

A French group does the best realization yet of Wheeler's delayed-choice experiment.

Mirror, Mirror

All mirrors are not created equal.

One Sentence

Physicist Richard Feynman once said that if all knowledge about physics was about to expire the one sentence he would tell the future is that "Everything is made of atoms". What one sentence would you tell the future about your own area?

Local Realism, Loopholes, and the God Delusion

What Bell's theorem experiments and Richard Dawkins ought to have in common.

Classic Edition: The Transporters Aren't Working. Again.

Real "teleportation" isn't Star Trek stuff.

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