a universal matter-wave interferometer with optical gratings in the time domain

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Philipp Haslinger

Music by Adrian Artacho

by Adrian Artacho

Quantum-video

www.quantumnano.at

Douglas Hofstadter

Motivation

Δx

g

v

g

ds dBmax

dB

gd

2

g

g

TL

s

d

mv

hdB

Δx

g

v

dB

T

gL

2

dB

T

gL

2

mv

hdB

g

ds dBmax

g

d

mv

hs max

Time - domain

g

t

m

hts max)(

mv

hdB g

g = s max

g

d

mv

hs max

Time - domain

d

g

t

m

hts max)(

g

g

d

mv

hs max

Time - domain

d

g

t

m

hts max)(

g

g

d

mv

hs max

Time - domain

d

g

t

m

hts max)(

g

Interference pattern of faster particles

g

d

mv

hs max

Time - domain

d

g

t

m

hts max)(

g

Interference pattern of slower particles

g

d

mv

hs max

Time - domain

g

t

m

hts max)(

After the same time all particles with the same mass produce the same interference, regardless of their velocities!

nmnm

g laser 5,782

157

2

g

dB

T

gL

2

h

mgTT

2

t=0

to MCP

interferometer mirror pulsed source TOF MS

t=TT

hmgTT /2

tsource tdetection

mass

sig

nal

200 400 600 800 1000 1200 1400 1600 1800 2000 2200

0

2

4

6

8

10

12

x 105

Pulsed

cluster source

t=2TT

157 nm post

ionization

Haslinger et al. Nature Physics (2013)

Music

by Adrian Artacho

3 4 5 6 7 8 9 10 11 12 13

0

0.2

0.4

0.6

0.8

cluster number

no

rm.

co

ntr

ast

3 4 5 6 7 8 9 10 11

0

0.2

0.4

0.6

0.8

1

cluster number

no

rm.

co

ntr

ast

C8H10N4O2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15-0.2

0

0.2

0.4

0.6

cluster number

no

rm.

co

ntr

ast

C8H8O3

Limits & Outlook:

Limits & Outlook:

Erwin Schrödinger‘s grave in Alpbach

It is not „written in stone“

Limits & Outlook:

It is „written in stone“

At University of Vienna

Team 2013

Philipp Haslinger Bordeaux 2013

Time-domain interferometry

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