Wyman wrote:'There exist quantum algorithms, such as Simon's algorithm, which run faster than any possible probabilistic classical algorithm.[8] Given sufficient computational resources, however, a classical computer could be made to simulate any quantum algorithm; quantum computation does not violate the Church–Turing thesis.[9]'
That's from wikipedia. The whole entry supporst the idea the quantum computers are capable of performing certain functions faster and more efficiently, but I didn't see anything that indicated a hope for some different kind of computation.
In a conventional microchip logic gates use 1,0 to encode bits, which are translated by machine code and then parsed and parity checked so that they may be used in some sort of software. In quantum computers they encode qbits or quantum bits 1,0,0-1,1-0 the unexcited state and the mixed state of base state and excited state in superposition, meaning for each bit there are 4 possible states 2 of which are a superposition of 1 and 0, which is exponentially faster than the two bit processors. Also electrons run the risk of over heating limiting the amount of data that can be stored and causing short circuit problems at small scales due to quantum electron tunneling, photons on the other hand have no such issues so its considered such a machine has potentially taken the micro scale of computers to the nano scale, photons are also far less prone to interference at least at very low temperatures, current ion trap configurations and programs operate at very low temperatures typically around the liquid nitrogen temperature the traps encoding hence are stable, which is the stumbling block atm how to run a quantum system at room temperature, figure that out and the Nobel prize is yours. It's envisioned quantum computers will be very good at number crunching type tasks where they will easily outperform the donkey like electron transistors.
2008
Graphene quantum dot qubits[63]
Quantum bit stored[64]
3D qubit-qutrit entanglement demonstrated[65]
Analog quantum computing devised[66]
Control of quantum tunneling[67]
Entangled memory developed[68]
Superior NOT gate developed[69]
Qutrits developed[70]
Quantum logic gate in optical fiber[71]
Superior quantum Hall Effect discovered[72]
Enduring spin states in quantum dots[73]
Molecular magnets proposed for quantum RAM[74]
Quasiparticles offer hope of stable quantum computer[75]
Image storage may have better storage of qubits[76]
Quantum entangled images[77]
Quantum state intentionally altered in molecule[78]
Electron position controlled in silicon circuit[79]
Superconducting Electronic Circuit Pumps Microwave Photons[80]
Amplitude spectroscopy developed[81]
Superior quantum computer test developed[82]
Optical frequency comb devised[83]
Quantum Darwinism supported[84]
Hybrid qubit memory developed[85]
Qubit stored for over 1 second in atomic nucleus[86]
Faster electron spin qubit switching and reading developed[87]
Possible non-entanglement quantum computing[88]
D-Wave Systems claims to have produced a 128 qubit computer chip, though this claim has yet to be verified.[89]
2009
Carbon 12 purified for longer coherence times[90]
Lifetime of qubits extended to hundreds of milliseconds[91]
Quantum control of photons[92]
Quantum entanglement demonstrated over 240 micrometres[93]
Qubit lifetime extended by factor of 1000[94]
First Electronic Quantum Processor Created[95]
Single molecule optical transistor[96]
NIST reads, writes individual qubits[97]
NIST demonstrates multiple computing operations on qubits[98]
A combination of all of the fundamental elements required to perform scalable quantum computing through the use of qubits stored in the internal states of trapped atomic ions shown[99]
Researchers at University of Bristol demonstrate Shor's algorithm on a silicon photonic chip[100]
Quantum Computing with an Electron Spin Ensemble[101]
Scalable flux qubit demonstrated[102]
Photon machine gun developed for quantum computing[103]
Quantum algorithm developed for differential equation systems[104]
First universal programmable quantum computer unveiled[105]
Scientists electrically control quantum states of electrons[106]
Google collaborates with D-Wave Systems on image search technology using quantum computing[107]
A method for synchronizing the properties of multiple coupled CJJ rf-SQUID flux qubits with a small spread of device parameters due to fabrication variations was demonstrated[108]
2010
Ion trapped in optical trap[109]
Optical quantum computer with three qubits calculated the energy spectrum of molecular hydrogen to high precision[110]
First germanium laser brings us closer to 'optical computers'[111]
Single electron qubit developed[112]
Quantum state in macroscopic object[113]
New quantum computer cooling method developed[114]
Racetrack ion trap developed[115]
5/2 quantum Hall liquids developed[116]
Quantum interface between a single photon and a single atom demonstrated[117]
LED quantum entanglement demonstrated[118]
Two photon optical chip[119]
Microfabricated planar ion traps[120][121]
Qubits manipulated electrically, not magnetically[122]
2011
Entanglement in a solid-state spin ensemble[123]
NOON photons in superconducting quantum integrated circuit[124]
Quantum antenna[125]
Multimode quantum interference[126]
Magnetic Resonance applied to quantum computing[127]
Quantum pen[128]
Atomic "Racing Dual"[129]
14 qubit register[130]
D-Wave claims to have developed quantum annealing and introduces their product called D-Wave One. The company claims this is the first commercially available quantum computer[131]
Repetitive error correction demonstrated in a quantum processor[132]
Diamond quantum computer memory demonstrated[133]
Qmodes developed[134]
Decoherence suppressed[135]
Simplification of controlled operations[136]
Ions entangled using microwaves[137]
Practical error rates achieved[138]
Quantum computer employing Von Neumann architecture[139]
Quantum spin Hall topological insulator[140]
Two Diamonds Linked by Quantum Entanglement could help develop photonic processors[141]
2012
Physicists create a working transistor from a single atom[142]
A method for manipulating the charge of nitrogen vacancy-centres in diamond[143]
Bell-based randomness expansion with reduced measurement independence.[144]
D-Wave claims a quantum computation using 84 qubits.[145]
Reported creation of a 300 qubit quantum simulator.[146]
Decoherence suppressed for 2 seconds at room temperature by manipulating Carbon-13 atoms with lasers.[147]
2013
Coherent superposition of an ensemble of approximately 3 billion qubits for 39 minutes at room temperature. The previous record was 2 seconds.[148]
2014
Documents leaked by Edward Snowden confirm the Penetrating Hard Targets project,[149] by which the NSA seeks to develop a quantum computing capability for cryptography purposes
http://en.wikipedia.org/wiki/Timeline_o ... _computing
Where the field is atm.