I Don’t Want to Win Lying Down

paper and pencil?

What is he... what is he going to do?

After Yang Xiaoman heard Xu Mang's request, he looked at him in a daze. He was eating well, and suddenly asked for paper and pen... Is this big fool going to solve scientific research problems in the restaurant? No way? A rare date.

Although Yang Xiaoman was very reluctant, she still took out a black pen and notebook from her satchel and handed them to Xu Mang.

well?

What happened to you? Yang Xiaoman asked.

I thought of...a coding method that surpasses the existing quantum error correction. Xu Mang said seriously, Seeing your drawing movement... I thought of topology, maybe I can use torus coding based on topological method , to solve the one-millionth error tolerance of CSS code and Shure code.

Yang Xiaoman looked confused, what kind of torus code, CSS code and Shure code... what are they? I can't even understand.

moment,

Xu Mang began to write codes in the notebook. This kind of quantum error correction code is different from traditional computer codes. It is more biased towards the coding of behavioral logic. There are only numbers and arrows on the notebook, that's all.

Swish Swish Swish,

Seeing Xu Mang frowning, Yang Xiaoman frantically scribbled on his notepad, writing an Arabic numeral for a while, and then an arrow symbol, which is a bit different from traditional codes.

What is he doing?

What is he trying to do?

Is he crazy?

Ahem...

Husband? Yang Xiaoman coughed lightly, and asked cautiously, We... what are we doing?

ah?

Uh... let's go on a date. Xu Mang replied absently, then continued to frown and write the special code, it seems... There is a mistake here... It stands to reason that it can solve polygon nesting and neighbors. The domain relationship problem, but it looks so twisted!

Yang Xiaoman: (#￣～￣#)

what to do?

You can't scold, you can't speak, you can't beat...

Is this romantic date... going to be spent in silence and frowning?

That...

Then what are you doing? Yang Xiaoman asked softly.

I?

I'm solving the problem of quantum error correction. Xu Mang said casually, thinking about why the torus code he wrote was so twisted.

Seeing Xu Mang's serious face, Yang Xiaoman also gave up trying to break him up mentally, and ate durian pizza silently, but the originally sweet pizza was so bitter in his mouth, Xiaoman was quite helpless at this moment , She wanted to strangle Xu Mang to death.

after a long time,

Xu Mang seemed to be in despair. He... He found that his torus code was useless. In terms of quantum error correction, the torus geometric structure is very weak, even so weak that it is not as useful as CSS codes and Schur codes. logical question.

Often when a problem occurs, more than a dozen patches need to be applied, and sometimes two errors appear after one patch is applied.

It's over!

It's all over!

This... What the hell should I do?

Xu Mang opened his eyes wide, looked at the featured codes on the notepad with a confused face, and couldn't help turning a few pages forward... The huge sense of frustration made Xu Mang very uncomfortable, no wonder Google and IBM always use physical bits. Ways, feelings... only this is the most suitable.

wrong!

There is no such absolute thing!

Xu Mang thought that there was something wrong with his structure, but the topology method was correct.

Xiaoman...I...

Xu Mang raised his head and saw Xiaoman dragging his head and looking drowsy. Only then did he realize that there were very few customers in the Pizza Hut restaurant... Looking at the time, it was almost half past nine .

well...

careless,

Another date screwed up.

Waiter? Xu Mang called softly, Pay the bill!

...

august night,

Very hot... the heat absorbed during the day,

Continue to release at night.

Xu Mang was walking home with Xiaoman, who was sleeping soundly on his back. It was quite a distance from the Bund to home, about seven kilometers. According to the average adult speed of 0.8 meters per second, it would take about an hour and a half to walk seven kilometers.

brother?

Get in the car? A taxi driver slowed down and shouted at Xu Mang, Turn on the watch!

No more... Xu Mang shook his head.

Watching the taxi leave, Xu Mang continued walking home with the lithe Xiaoman on his back.

actually,

Xu Mang enjoyed spending time with Xiaoman in the two-person world, because he could always find happiness inside, but unfortunately... he didn't cherish it before, but when the two of them were very busy, he found that such opportunities no longer existed. up.

At this time, I remembered the oath I made, not to bring work emotions into the home... Who knew that before I knew it... this oath was torn up by myself.

Um?

Fool?

We... where are we going? Yang Xiaoman lay on Xu Mang's back, awakened by the bumps, and asked sleepily, I...why am I lying on you? on the back?

You're too tired...I'll carry you home. Xu Mang said softly, Sleep...I'll call you when I get home.

oh...

May be really tired,

Before Yang Xiaoman's head could react, he lay on Xu Mang's back and fell asleep again... This time he slept more deeply than before.

There was still the last kilometer away from home, and Xu Mang was exhausted. There was nothing he could do...Although Xiaoman was quite light, he was still alone. The weight was directly on his body, and he walked six kilometers in a row, which is considered physical strength OK

Are you tired?

Sudden,

When Xu Mang stood resting in place, a voice came from behind to Xu Mang's ears, and he was almost scared to pee.

well?

Are you awake? Xu Mang asked in surprise, I'll be home soon.

Yang Xiaoman didn't speak, but quietly lay on Xu Mang's back, and asked softly, Is the problem solved?

...

Of course it's solved! Xu Mang said with a smile, Don't even look at who I am?

Big idiot!

Yang Xiaoman hugged Xu Mang's neck, leaned into his ear, and said, You owe me a date... remember to pay me next time.

oh...

By the way, I'm about to take off, do I need to adjust my seat? Xu Mang asked with a smile, If you don't need it, then hug me tighter.

What are you going to do? Yang Xiaoman asked curiously.

Hey hey...

next second,

Xu Mang started the 100-meter sprint with Xiaoman on his back, but the sudden change made Xiaoman scream in fright.

at this time,

on the street,

There is an extra couple who just escaped from the mental hospital.

at home,

Xu Mang slumped to death on the sofa, looking at the ceiling with a look of unrequited love... He overestimated his physical strength, never imagined... the seven-kilometer journey would be so exhausting.

Fool?

Hurry up and take a shower, so I can sleep. After taking a shower, Yang Xiaoman glanced at Xu Mang on the sofa, and said helplessly, Usually I told you not to exercise.

Watching Xiaoman walk into the room, Xu Mang walked slowly towards the bathroom. After taking a shower...Xu Mang regained his previous energy. He didn't enter the bedroom immediately, but sat on the sofa to take Take out the notepad and look at the torus code I wrote.

structure...

How to solve the wrong topology?

Xu Mang fell into contemplation... If he changed the structure from geometry to plane, what kind of changes would there be?

This was the result of wild thinking, and Xu Mang didn't know if it would be successful. In short, the sudden inspiration had no scientific basis, but he still considered the whole problem according to this plane code.

don't even say,

When Xu Mang got into this idea, he was surprised to find that flat coding seemed to be useful.

If the encoding form uses a two-dimensional matrix to arrange qubits, then only the nearest neighbor coupling is required between the bits, so... the error rate requirement is 0.75%, which is much lower than one millionth .

Thinking of this,

Xu Mang started to encode the plane code. At this time, the qubits on the notebook were arranged in a matrix like a chessboard. In addition to the traditional qubits used to store information, there were also qubits for error correction. These main detection Bit Flip Error and Phase Flip Error.

This encoding method only requires neighbor coupling.

over...

Finished? Xu Mang looked at his coding result in disbelief, no matter what method he used, this unintentional thought turned out to be a key to the world of quantum computing.

pity...

The key is rusty.

Fuck!

Damn...why did it become like this again?! Xu Mang looked at the paper on Google on the tablet, and realized how unreliable his plane code was, and it required huge qubits. , to form a logic bit.

According to Xu Mang's rough calculations, there are roughly 4,000 qubits. You must know that there are only more than 50 qubits in the world. This 4,000 qubits is a bit too advanced.

never mind!

That's it for now.

Xu Mang broke the jar and walked silently to the bedroom.

...

the next day,

The early morning sun shone on his butt, and Xu Mang felt a burning sensation. He glanced at the time and it was already noon, but Xiaoman had long since disappeared. He guessed that he had gone to work.

After getting up and putting on his underwear, Xu Mang went to the living room and found someone in the kitchen. After walking in, he saw clearly that it was his mother-in-law.

Wake up?

Xiao Xu. Mother Yang said with a smile: I was with Xiao Man yesterday, did you come home late?

ah?

Oh...we're...eating outside. Xu Mang said awkwardly, Then what...Mom, why didn't you go to work?

Your wife called me and asked me to come back and cook for you. Yang's mother smiled wryly, Oh...you see, I'm about to become a grandmother, but...forget it, as long as you and Xiaoman is happy, I don't care, right!

Mother Yang looked at Xu Mang seriously, and said seriously, I heard you haven't quit smoking yet?

ah?

I... I usually have a lot of work pressure, so... I won't be able to quit for a while. Xu Mang explained.

Mother Yang was silent for a moment, then sighed and said, I quit smoking after I got married, and I will start smoking when Xiaoman has a child.

oh...

Understood. Xu Mang nodded.

After cooking for Xu Mang, Mother Yang went directly to the company. At this time, only Xu Mang was left in the big family, with a problem that troubled him.

However, Xu Mang has already given up. He intends to use the physical bit method to study quantum computers, just like Google and IBM. His own... quantum error correction method is unlikely to be completed with the current science and technology, even if he has already completed it. Theory and coding, the hardware does not meet the requirements.

Thinking of this,

Xu Mang took out his cell phone and called Second Grandpa.

Hello?

Xu Mang said with a smile, Second Grandpa...my thesis is finished, an absolutely unprecedented concept!

Second Grandpa:? ? ?

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