a trapped-atom quantum memory (PDF) - MIT

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TELEPORTATION: VIA BELL STATE MEASUREMENT |Φ> = α |↑> + β |↓> |Ψ> = ( |↑ ↓ > − | ↓ ↑ > ) /√2 ALICE BOB | √2 |W> = α (|↑↑↓> − |↑↓↑>) + β (|↓↑↓> − |↓↓↑>) BELL STATES DECOMPOSITION |Β 1 > = ( |↑ ↓ > − | ↓ ↑ > ) /√2 |Β 2 > = ( |↑ ↓ > + | ↓ ↑ > ) /√2 |Β 3 > = ( |↑ ↑ > − | ↓ ↓ > ) /√2 |Β 4 > = ( |↑ ↑ > + | ↓ ↓ > ) /√2 |↑ ↑ > = (|Β 4 > + |Β 3 >) /√2 |↓ ↓ > = (|Β 4 > − |Β 3 >) /√2 |↑ ↓ > = (|Β 2 > + |Β 1 >) /√2 |↓ ↑ > = (|Β 2 > − |Β 1 >) /√2
|Φ> = α |↑> + β |↓> ALICE |Β> |ξ> BOB | 2 |W> = |Β 1 > |ξ 1 > + |Β 2 > |ξ 2 > + |Β 3 > |ξ 3 > + |Β 4 > |ξ 4 > WHERE | |ξ 1 > = − (α |↑> + β | ↓>) = − α β = − |Φ> | |ξ 2 > = | |ξ 3 > = | |ξ 4 > = -1 0 0 1 0 1 1 0 0 -1 1 0 |Φ> |Φ> |Φ>
Page 1 and 2: TELEPORTATION OF A QUANTUM STATE US
Page 3: TELEPORTATION: WHAT |ψ> = α |↑>
Page 7 and 8: LASER-CONTROLLED SPIN EXCITATION RE
Page 9 and 10: 2 − = ( Ω a − Ω b )/ Ω + Ω
Page 11 and 12: COHERENCE TRANSFER VIA CAVITY QED A
Page 13 and 14: ADIABATIC COHERENCE TRANSFER VIA CA
Page 15 and 16: EXPLICIT SCHEME IN 87 RB C B D A
Page 17 and 18: ATOM 1 IN ARBITRARY STATE: TO BE TE
Page 19 and 20: TRANSFER STATES OF 1 AND 2 INTO 2 O
Page 21 and 22: ROTATE SUPERPOSITION-BASIS BELL STA
Page 23 and 24: LOADING ATOMS INTO A FORT USING A F
Page 25 and 26: PHOTOGRAPH OF THE TRAP
Page 27: POSSIBLE REALIZATION OF BASIC TEST

a trapped-atom quantum memory (PDF) - MIT

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