alejandro gaita-ariño - universitat de valència · alejandro gaita-ariño erc consolidator grant...
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Alejandro Gaita-Ariño ERC Consolidator Grant
DECRESIMControl Quantum Decoherence using Coordination Chemistry
26 / 11 / 2014
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Today’s electronics run on Quantum Mechanics
“classical” computing
biomedical MRI
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Rabi oscillations
Tomorrow’s electronics run on ‘cat states’
spin-spin relaxation time
T2
long T2
Q
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Decoherence kills‘cat states’
short T2
no Rabi oscillations
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Chemistry can protect‘cat states’
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Chemistry can protect‘cat states’
1:
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Chemistry can protect‘cat states’
1:
2:
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Chemistry can protect‘cat states’
1:
2:
3:
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DECRESIMA chemical approach to molecular spin qubits:
Decoherence and organization of Rare Earth coordination complexes
WP1
Coherence
WP2
Interaction
WP3
Organization
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DECRESIMA chemical approach to molecular spin qubits:
Decoherence and organization of Rare Earth coordination complexes
[Ln(W5O
18)2]9-
n = 1
WP1
Mononuclear
Ln3(OQ)
9
Q= Quinoline
n = 3
WP2
Polynuclear
[Ln(bipyNO)4]∞
n = ∞
WP3
Extended
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Zero-FieldSplitting
Magnetic Exchange
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Crystal
Field
Spin-Orbit
Coupling
Zero-Field
Splitting
Magnetic
Exchange
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Crystal
Field
Spin-Orbit
Coupling
Zero-Field
Splitting
Magnetic
Exchange
Tunneling
Splitting
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From SMMs to Spin Qubits
SIMs
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From SMMs to Spin Qubits
SIMs
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WP1: Decoherence
in a mononuclear complex
Rabi Oscillations
Theory Experiment
Time
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Chem. Eur. J., 2014, 20, 10695.
Inorg. Chem., 2014, 53, 9976.
Inorg. Chem., 2014, 53, 11323.
and 9 more works in preparation.
J. Am. Chem. Soc., 2012, 134, 14982.Inorg. Chem., 2012, 51, 1256.
Dalton Trans., 2012, 41, 13705.
Chem. Sci., 2013, 4, 938.
J. Comp. Chem., 2013, 34, 1961.
J. Comp. Chem., 2014, 35, 1930.
Upcoming Featuresin 2.0
Parameterization of common ligands
Consideration of spin-orbit coupling
From coordination environment
to Crystal Field Hamiltonian
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Coupling to the environment
Phys. Rev. Lett, 2011, 107, 105504
Phys. Rev. B 2012, 86, 024432
Int. J. Quant. Chem. 2012, 112, 2957
arXiv:1405.2217, submitted to Phys. Rev. BarXiv:1408.5321, submitted to Int. J. Num. Met. Eng.
[Ln(W5O
18)2]9-
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Dynamical properties - Time Evolution
Electric field
Magnetic field
+
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Dynamical properties - Time Evolution
[Ho(W5O18)2]9-
Clock transitions, Long T2 with no dilution
Electric field
Magnetic field
+
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Dynamical properties - Time Evolution
Chem. Comm. 2013, 49, 8922. [Ho(W5O18)2]9-
[GdP5W30O110]12-
Clock transitions, Long T2 with no dilution
Electric field
Magnetic field
+
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WP2+3: Quantum Gates,
Quantum Algorithms
[PMo12O
40(VO)
2]q-
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WP2+3: Interaction and Organization
Extended Systems
Quantum automata
[Ln(bipyNO)4]∞
n = ∞
Chem. Eur. J., 2014, 20, 10695Phys. Rev. A, submitted
Ln3(OQ)
9
Q= Quinoline
n = 3
Polynuclear Complexes
Quantum algorithm
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Control Quantum Decoherenceusing Coordination Chemistry
DECRESIM