Helen Lavender Bacon, 1915-2007

Yesterday my grandmother, Helen Lavender Bacon passed away at the age of 91. Grandma Pete (as we called her, Pete being my grandparent’s dog…doesn’t everyone name their grandparents after their grandparent’s pets?) was the kindest person I have ever met in my life. I have many fond memories of my grandma, including a spectacular trip I took with my father to visit her and my grandpa in Sacramento where I got to see my dad argue a case before the California Supreme Court and woke up during the return trip on a small airplane staring directly at Mt. Shasta, but mostly I will remember standing in line with my grandma. Standing in line, you say? Pft, what a silly memory! But what you have to understand is that if you would go out to a grocery store with my grandma, and were waiting in the checkout line with her, random strangers would, unprovoked, start up conversations with you. There was something in her smile, in her body language, which just invited people into conversation. As if you could just tell that she was going to be fun to talk to and always smile at your jokes and your ideas. Whenever I see kindness, a part of my thoughts will always remember my grandmother, and standing in line.
Here is my Grandma Pete, only a few years ago, riding on the wild side:
Grandma Pete

From the Sacramento Bee:

BACON, Helen Lavender
Passed away peacefully on July 18, 2007 at age 91 in Carmichael, CA. She was preceded in death by her loving husband of 60 years, Glenn Claire Bacon and beloved son, Larry George Bacon. She is survived by son, Glenn Charles Bacon; nieces, Doris Adams and Helen Jensen; six grandchildren and three great-grandchildren. She will be deeply missed by her family and friends. Helen was born on September 11, 1915 in Hyattville, WY. She was raised in Washington state and Arizona where she was married to Glenn and gave birth to her sons. She moved to the Sacramento area in 1947 and has been a resident here since. Over this time, she has been blessed to have a huge community of caring friends who have been most kind and giving in her aging process. A celebration of Helen’s life will be held at Celtic Cross Presbyterian Church, 5839 Dewey Dr., Citrus Heights, Saturday July 21 at 1:00pm. Private interment will be at Sierra Hills East Lawn Memorial Park. Helen (Mom, Grandma) was a source of loving kindness for everyone she touched. In lieu of flowers, an appropriate remembrance would be an intentional act of kindness on her behalf.
Published in the Sacramento Bee on 7/19/2007.

Many Universes, But Not All Lead to Salvation or the Simpson's Movie

It
[youtube]http://youtube.com/watch?v=OL50ddCSJmo[/youtube]
is
[youtube]http://youtube.com/watch?v=q-O7Nteshv4[/youtube]
coming!
[youtube]http://youtube.com/watch?v=3r-YJOrY28w[/youtube]
Maybe, finally, after all these years of waiting, we will learn just exactly what “Quantum Presbyterianism” is:

Homer: [opens door to find Kang and Kodos standing there] Hello — oh great. Mormons.
Kang: Actually, we’re Quantum Presbyterians…

I’m thinking it involves a doctrine which says that you are spiritually doomed to branches of the wavefunction which are condemned by God, but the divine intervention of God can lead you to those branches which are not condemned. Or something like that.
“Spider pig, spider pig…”

Teleportation? Beam Me Up, But Do It Coherently?

This news article, led me to this website, describing a scheme (arXiv:0706.0062, “Teleportation of massive particles without shared entanglement” A. S. Bradley, M. K. Olsen, S. A. Haine and J. J. Hope) for transporting matter waves between two remote BECs. The basic idea is a setup where mater wave gets converted into information in photons which then gets written back onto another BEC. A very cool idea (if probably experimentally challenging!) However, in all of the above the articles, the experiment is described as “teleportation.” Now don’t get me wrong, I think the experiment would be very cool if you could pull it off, but does this type of setting really deserve the moniker of “teleportation”? Now normally I would call a setup like what they authors describe a quantum state transfer protocol and not teleportation. In teleportation you use entanglment and classical communication to transmit quantum information. In the above setting you swap the information from the matter wave to the light field and then back out again, with no use of entanglment or classical communication. The authors, probably sensing the existence of 32-year-old-curmudgeons like me, write

Although our scheme is quite distinct from what is normally termed quantum teleportation,
we feel that it is closer in spirit to the original fictional concept and so will use the term to describe our system.

Okay, so we could argue about this nomenclature until we turn ourselves into chemists. But the real question, I think, is not one of naming rights (although seeing as how the preprint is PRL pages long, and that damn APS journal is the king of the pedantic, there might be some interesting editor/author wrestling matches ahead.) No, the real question is whether the experiment described above is actually close in spirit to the original fictional concept!
So which is more like Star Trek teleportation? The teleportation ideas of Bennett et al. which use entanglement and classical communication or the “teleportation” ideas described above?

Reviewing Ratio?

Since that last poll got more than three total responses, and I’m here refereeing a paper, here is another poll for your amusement:
[poll=3]

Many Links Interpretation of Nature Magazine

If you haven’t seen it already, the front page of the July 5th issue of Nature has an amusing picture inspired by the “Many Worlds” interpretation of quantum theory. (I’ve said it before, and I’ll say it again. One world is enough for me, thank you very much.) Included in this issue is an essay on the many worlds interpretation:

All three approaches have their adherents, but for what seems to be a growing number of physicists, especially those working in quantum information and cosmology, it is Everett’s alternative that wins out…

Hmm, well we can run an experiment, err, I mean a social science experiment, aka a poll. Okay so these categories are subject to interpretation. For a rough guide here is wikipedia’s interpretation of quantum theories page.
[poll=2]
Also in this issue is an article Many lives in many worlds by Max Tegmark arguing for the many-worlds interpretation as well as an article Surfing the multiverse by Gary Wolfe describing many worlds and science fiction.
Finally, and perhaps more exciting than all this many worldliness, in this universe it appears that low enegy acoustic plasmons at metal surfaces have been observed. Word as to whether this observation has been made in other universes awaits the construction of a quantum computer 😉

FOCS 2007, 4 Quantum

The list of FOCS 2007 papers has been posted (via Geomblog). Quantum papers:

Andrew M. Childs, Leonard J. Schulman and Umesh V. Vazirani.
Quantum algorithms for hidden nonlinear structures
[arXiv:0705.2784]
Oded Regev and Ben Toner.
Simulating Quantum Correlations with Finite Communication
[not available online yet 🙁 ]
Dorit Aharonov, Daniel Gottesman, Sandy Irani and Julia Kempe.
The power of quantum systems on a line
[arXiv:0705.4077]
Andris Ambainis, Andrew Childs, Ben Reichardt, Robert Spalek and Shengyu
Zhang.
Any AND-OR formula of size N can be evaluated in time N^{1/2+o(1)} on a quantum computer
[arXiv:0704.3628 and arXiv:quant-ph/0703015]

QEC'07 Speaking/Poster Spots Open

From Daniel Lidar, spots open for contributed speakers at QEC’07:

There are still contributed speaker and poster slots left for QEC’07. We
would very much appreciate your assistance in spreading the word and
helping us make the conference a success. Please encourage your
students/postdocs/colleagues to submit an abstract and participate in
the conference. All pertinent information is available on the conference
site http://qserver.usc.edu/qec07/. The registration and payment deadline is Oct. 31, 2007.
With best wishes, and looking forward to seeing you at USC in December,
Daniel, Todd, and Paolo