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Matterwave interferometry beyond classical limits Synthetic Quantum Systems / Kirchhoff Institut für Physik / Heidelberg University

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How does an apple drop? Precision limits: size of apple Precision of the ruler Precision of time Synthetic Quantum Systems / Markus Oberthaler

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apple atom precision limit: size of the apple precision limit: size of the atom? How does an apple drop? Synthetic Quantum Systems / Markus Oberthaler

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quantum mechanics 1924 De Broglie a particle h = Js m = kg wavelength is smaller than the atom size ! Synthetic Quantum Systems / Markus Oberthaler

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quantum mechanics interference smaller than the size of the atom wavelength Synthetic Quantum Systems / Markus Oberthaler

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quantum mechanics interference position probability Synthetic Quantum Systems / Markus Oberthaler

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Steven Chu/Nobel Preis 1997 quantum mechanics interference – classical limit g

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Verlust von Kontrolle: Zitat Einstein : Gott würfelt nicht! Wie kann man mit einer Beschreibung die nur alles scheints zufällig macht etwas verbessern h= Js Steven Chu/Nobel Preis 1997 Quantum mechanics Interference – classical limit why is this point not on the line? number of atoms

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position probability quantum mechanics interference – classical limit position is only know within an uncertainty, due to final number of particles statistics N Synthetic Quantum Systems / Markus Oberthaler classical precision limit

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Bose Einstein condensation Many particle quantum physics Cornell Ketterle Wieman Nobel price °K °K °K atoms are like apples/balls wave nature becomes important all atoms are in lock step Synthetic Quantum Systems / Markus Oberthaler

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surface of the sun room temperature liquid Helium laser cooling Doppler limit recoil limit temperature [K] Bose Einstein condensation the experimental steps

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surface of the sun room temperature liquid Helium laser cooling Doppler limit recoil limit temperature [K] Cornell, Ketterle, Wieman Nobel price 2001 Bethe Nobel price 1967 William F. Giauque Nobel price 1949 Lee,Osherov, Richardson Nobel price 1996 Chu,Cohen-Tannoudji, Phillips Nobel price 1997 Kamerlingh Onnes Nobel price 1913 Abrikosov, Ginzburg, Leggett Nobel price 2003 Kapitsa, Penzias, Wilson Nobel price 1978 Bednorz,Müller Nobel price 1987 temperature scale or....

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in real life ? combine low with high-tech µ Synthetic Quantum Systems / Markus Oberthaler

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many particle interference overlapping condensates Synthetic Quantum Systems / Markus Oberthaler

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many independent particles what is different to Chus experiment Synthetic Quantum Systems / Markus Oberthaler

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precision is gained by repetition what do many experiments give N Synthetic Quantum Systems / Markus Oberthaler

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T=0 N condensed particles is different to N independent particles Synthetic Quantum Systems / Markus Oberthaler

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fluctuations of particle number squeezed matterwaves statistics Synthetic Quantum Systems / Markus Oberthaler

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fluctuations of particle number squeezed matterwaves position propability Mach-Zehnder interferometer Synthetic Quantum Systems / Markus Oberthaler

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fluctuations of particle number squeezed matterwaves position propability Mach-Zehnder interferometer Synthetic Quantum Systems / Markus Oberthaler

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precision beyond the classical limit many particle quantum physics Synthetic Quantum Systems / Markus Oberthaler

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quantum metrology sensors beyond tomorrow 1 minute witin the age of the universe classical precision limit Nature 455, 1216 (2008) Nature 464, 1165 (2010) Synthetic Quantum Systems / Markus Oberthaler

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