AND gate


  • WordNet 3.6
    • n AND gate a circuit in a computer that fires only when all of its inputs fire
    • ***


  • Homer
    “Hateful to me as the gates of Hades is that man who hides one thing in his heart and speaks another.”
  • Cecil F. Alexander
    Cecil F. Alexander
    “The rich man in his castle, the poor man at his gate, God made them, high or lowly, and ordered their estate.”
  • D. H. Lawrence
    “There's always the hyena of morality at the garden gate, and the real wolf at the end of the street.”
  • Henry Wadsworth Longfellow
    “If you only knock long enough and loud enough at the gate, you are sure to wake up somebody.”
  • Henry Wadsworth Longfellow
    “Perseverance is a great element of success. If you only knock long enough and loud enough at the gate, you are sure to wake somebody.”
  • Edward M. Forster
    “Railway termini are our gates to the glorious and the unknown. Through them we pass out into adventure and sunshine, to them, alas! we return.”


In literature:

He was at the gate of Elm Cottage by this time, and, with a strong glow of resolution, he walked boldly to the door and knocked.
"The Manxman A Novel - 1895" by Hall Caine
I came home at midnight, and there she was standing at the gate, white and slim and pretty as though she was a moonbeam.
"Girls of the Forest" by L. T. Meade
At the angle of a gate and a thick brier hedge he struck a match and read the time by his watch.
"A Son of Hagar" by Sir Hall Caine
He was just about to go and fetch a handful of sticks, preparatory to lighting a fire, when he heard the click of his garden gate.
"Antony Gray,--Gardener" by Leslie Moore
He took his arms and the lion's tail, and entered the gate of the castle.
"Eastern Tales by Many Story Tellers" by Various
Pinckney, who had just shut the gate, heard the whisper of the leaves, he turned and saw a figure standing half in shadow and half in moonlight.
"The Ghost Girl" by H. De Vere Stacpoole
At last his hour came, and he died, and came to the gates of Paradise.
"What the Moon Saw: and Other Tales" by Hans Christian Andersen
He sought shelter in the church, and shut gate and door behind him.
"Fairy Tales of Hans Christian Andersen" by Hans Christian Andersen
Passing the sentries at the gate, we crossed the courtyard, and entered the Palais Royal through a narrow door leading to a private staircase.
"My Sword's My Fortune" by Herbert Hayens
At length she slowly turned away towards the gate, and he rose and followed, scarcely aware of what he was doing.
"A Young Man in a Hurry" by Robert W. Chambers
The gates of Verona opened, and the enchantment was gone.
"Pilgrimage from the Alps to the Tiber" by James Aitken Wylie
And he, with Caesar's help, was going to change all that, and open the gates of the world wide for him.
"Christopher Hibbault, Roadmaker" by Marguerite Bryant
At length they reached the gates of the town, and the whole throng of horsemen, pursuers and pursued, pressed in together.
"Richard II" by Jacob Abbott
The north gate was closed hard and fast, and the bridge drawn.
"Robin Hood" by Paul Creswick
When she rose to go, father and daughter accompanied her to the gate, and wished her a hearty God-speed.
"Lover or Friend" by Rosa Nouchette Carey
They had passed through the gate, and the great west front was before them, with all its breadth and ornament.
"The Rainbow" by D. H. (David Herbert) Lawrence
By early morning she had dragged herself down from the mountains and staggered through the convent gate.
"Sunlight Patch" by Credo Fitch Harris
Into the Garden went the Little Princess, and the Queen, and all her ladies; but no man might pass the gates, save the King himself.
"Boys and Girls Bookshelf (Vol 2 of 17)" by Various
Go back and hold the gate, and I and those with me will answer for the engine.
"The House Under the Sea" by Sir Max Pemberton
Moreover Uzziah built towers in Jerusalem at the corner gate, and at the valley gate, and at the turning of the wall, and fortified them.
"The Bible Story" by Rev. Newton Marshall Hall

In poetry:

Therefore my spirit clings
Heaven's porter by the wings,
And holds
Its gated golds
"To The Dead Cardinal Of Westminster" by Francis Thompson
"Open the gates
and let him come in;
He is my brother Huntly,
he'll do him nae harm."
"The Bonnie Earl Moray" by Andrew Lang
In that long horrid pause
"Good-night," he said,
Entered and clicked the gate,
"Each to his bed."
"Dicky" by Robert Graves
And, whether I come soon or late,
Whate'er befall,
Always within the guarded gate
I find you all.
"Within" by Susan Coolidge
The Ministers of State
Then presnly I sor,
They gallops to the Pallis gate,
In carridges and for.
"Lines On A Late Hospicious Ewent," by William Makepeace Thackeray
"But leave her to her fate,
And fling across the gate,
'Till the Last Trump, farewell,
O Amabel!'"
"Amabel" by Thomas Hardy

In news:

Volunteer Dave Poma, Nathan Cryster of the California Conservation Corps and volunteer Ernest Gates clean up the area around a newly-planted flower bed at the intersection of North School Street and West Smith Street.
Sebastian Thrun, Udacity's founder and a pioneer of massive open online courses, beat out Bill Gates and ranked just below Bill and Hillary Clinton.
Trains would not be allowed to blow their horns if signals and gates are built at those crossings.
A burglar threatened a Tulsa couple in their bedroom after gaining access to a guarded and gated community early Friday.
Eduardo Padrón, president of Miami Dade College, (left) welcomes Bill and Melinda Gates, co-chairs of the Bill and Melinda Gates Foundation.
Bill and Melinda Gates, co-chairs of the Bill and Melinda Gates Foundation, visited Miami Dade College (MDC) on Nov 10.
Boise Cascade 's Rogue Valley Plywood Plant closed its doors in 2009 because of the economic downturn, and a poor market for wood products, but now the gates are being opened, and work will soon begin again at the plant.
We cover the industry from the wellhead to the city gate, which means we are interested in wellhead and gathering compressors , booster stations, gas plants, storage facilities and mainline compressor stations.
Ed Lazowska holds the Bill and Melinda Gates chair in computer science and engineering at the University of Washington.
The 26-yar-old victim told cops that she and her employee were at the lot near Ashland Place at 3:50 am when the man pushed them out and slammed the metal gate into her body.
Later that day we drove out of the now oddly bourgeois skid row, which in addition to all the designer pet stores and gated condos was covered in police patrols.
And, sadly, even many active seniors choose to separate themselves from the broader world, opting for what they see as the safety and security of gated communities.
The Bill and Melinda Gates Foundation Campus features a 70,000-square-foot stone paver plaza, constructed with several Quikrete underlayment and grouting products.
Michaele and Tareq Salahi, best known as the "White House gate-crashers" and the sometime stars of 'Real Housewives of DC,' may or may not be in the midst of a true crime drama.
Surrounded by walls and gated, Sharon Stone's estate sits on five acres with pathways, bridges, waterfalls, fruit trees, a meditation garden, a swimming pool and a tennis court with viewing pavilion.

In science:

The idea is that a reader familiar with the standard idiom of quantum mechanics but unaccustomed to the language of ’qubits’ and ’gates’ will learn about quantum information science while learning about quantum random walks and their fascinating behavior.
Quantum random walks - an introductory overview
Gates: The computation of a classical computer can be described by a circuit consisting of gates (like AND or NOT) that act on one or two bits.
Quantum random walks - an introductory overview
Bennett that this is not a serious problem: Any classical circuit can be made reversible by replacing its gates by a reversible three bit gate and adding some more scratch space.
Quantum random walks - an introductory overview
As we have seen we need qubits and gates which can be implemented in a multitude of ways.
Quantum random walks - an introductory overview
FIG. 3: The localized states to the right and the left of the barrier at the origin are identified as the qubit state |0i and |1i respectively. U = I represents the closed gate, while U = σ1 is the open gate case in which they are interchanged in the period T /2.
Locational Qubit Realization with One-dimensional Contact Interactions
To achieve the goal, we first perform a quantum CNOT gate C12 (where the first subscript of C denotes the control qubit and the second is the target qubit) on the local qubits 1,2, and then teleport this gate from the qubits 1,2 to the qubits 1,4 through the gate teleportation.
Experimental Teleportation of a Quantum Controlled-NOT Gate
The quality of a quantum gate is measured by the so-called process fidelity FP (or called gate fidelity), which is defined as the overlap of the matrices corresponding respectively to the measured and the ideal super-operators .
Experimental Teleportation of a Quantum Controlled-NOT Gate
FP is the average gate fidelity F , which is defined as the state fidelity between the measured and the ideal outputs of the CNOT gate, averaged over all possible input states.
Experimental Teleportation of a Quantum Controlled-NOT Gate
The quality of the gate teleportation is characterized through the comprehensive quantum state and process tomography techniques, and an average teleported gate fidelity as high as 0.84 is confirmed from the measured data.
Experimental Teleportation of a Quantum Controlled-NOT Gate
We follow the method of Barenco et al. to build an AND gate with w inputs.
Simple Permutations Mix Even Better
Thus, although the result resembles the known result that the isotropic exchange interaction generates a √SWAP gate from which a CNOT gate can be obtained by conjugating with single-qubit gates , it is valid here for a more general Hamiltonian that contains both nonlocal and local terms.
Generation of quantum logic operations from physical Hamiltonians
The B gate is more efficient than the CNOT gate in representing arbitrary two-qubit operations and may therefore be more useful for quantum simulations, while the CNOT gate is required for many common error correction protocols.
Generation of quantum logic operations from physical Hamiltonians
This subset might have very small measure compared to the full group; one example is the continuous gate set consisting of all single qubit rotations coupled with a CNOT gate between all qubit pairs (later we relax this assumption and consider convergence conditions for discrete and finite universal gate sets).
Convergence Conditions for Random Quantum Circuits
The outgoing gated signal photon is relayed on to the legitimate receiver, and the gated probe photon enters a Wollaston prism, oriented to separate photon orthogonal-linear-polarization states |w+ i and |w− i, and the photon is then detected by one of two photodetectors.
Conclusive Entangling Probe
The effect of gate A on the remaining two thermometer point contacts is negligible. A result obtained in this way (at I ∼ 0.1 µA and at T = 1.6 K) is plotted in figure 6(b), together with a trace of conductance versus gate voltage for the point contact in the channel.
Thermo-Electric Properties of Quantum Point Contacts